SQM on RPi4b OpenWrt 23.05.3 r23809 SLOW!

As title states.. Initial SQM install on RPi4b (wifi disabled, Wifi from r7800 AP) produced higher SQM throughput results than when using the r7800 for both routing AND Wifi.. Struggling to work out why throughput now is so slow..
ISP VirginMedia 260Mb package. Latest bufferbloat results are 36.9Mbps down & 15 up.
Would really appreciate advice to trouble shoot please..Please see terminal output from all requested commands in troubleshooting section..

root@OAGH:~# cat /etc/config/sqm

config queue 'eth1'
	option enabled '1'
	option interface 'eth1'
	option download '210000'
	option upload '17000'
	option qdisc 'cake'
	option script 'layer_cake.qos'
	option linklayer 'none'
	option debug_logging '1'
	option verbosity '5'

root@OAGH:~# ifstatus wan
{
	"up": true,
	"pending": false,
	"available": true,
	"autostart": true,
	"dynamic": false,
	"uptime": 416,
	"l3_device": "eth1",
	"proto": "dhcp",
	"device": "eth1",
	"updated": [
		"addresses",
		"routes",
		"data"
	],
	"metric": 0,
	"dns_metric": 0,
	"delegation": true,
	"ipv4-address": [
		{
			"address": "82.20.192.134",
			"mask": 22
		}
	],
	"ipv6-address": [
		
	],
	"ipv6-prefix": [
		
	],
	"ipv6-prefix-assignment": [
		
	],
	"route": [
		{
			"target": "0.0.0.0",
			"mask": 0,
			"nexthop": "82.20.192.1",
			"source": "82.20.192.134/32"
		}
	],
	"dns-server": [
		"192.168.3.1"
	],
	"dns-search": [
		
	],
	"neighbors": [
		
	],
	"inactive": {
		"ipv4-address": [
			
		],
		"ipv6-address": [
			
		],
		"route": [
			
		],
		"dns-server": [
			"194.168.4.100",
			"194.168.8.100"
		],
		"dns-search": [
			"cable.virginm.net"
		],
		"neighbors": [
			
		]
	},
	"data": {
		"dhcpserver": "80.1.17.129",
		"leasetime": 317624
	}
}
root@OAGH:~# SQM_DEBUG=1 SQM_VERBOSITY_MAX=8 /etc/init.d/sqm stop ; SQM_DEBUG=1 SQM_VERBOSITY_MAX=8 /etc/init.d/sqm start
/usr/lib/sqm/run.sh: line 57: can't create : nonexistent directory
SQM: Stopping SQM on eth1
/usr/lib/sqm/run.sh: line 57: can't create : nonexistent directory
SQM: Starting SQM script: layer_cake.qos on eth1, in: 210000 Kbps, out: 17000 Kbps
SQM: fn_exists: function candidate name: sqm_start
SQM: fn_exists: TYPE_OUTPUT: sqm_start: not found
SQM: fn_exists: return value: 1
SQM: Using generic sqm_start_default function.
SQM: fn_exists: function candidate name: sqm_prepare_script
SQM: fn_exists: TYPE_OUTPUT: sqm_prepare_script is a function
SQM: fn_exists: return value: 0
SQM: sqm_start_default: starting sqm_prepare_script
SQM: cmd_wrapper: ip: SUCCESS: /sbin/ip link add name SQM_IFB_3eb60 type ifb
SQM: cmd_wrapper: tc: SUCCESS: /sbin/tc qdisc replace dev SQM_IFB_3eb60 root cake
SQM: QDISC cake is useable.
SQM: cmd_wrapper: ip: SUCCESS: /sbin/ip link set dev SQM_IFB_3eb60 down
SQM: cmd_wrapper: ip: SUCCESS: /sbin/ip link delete SQM_IFB_3eb60 type ifb
SQM: cmd_wrapper: ip: SUCCESS: /sbin/ip link add name SQM_IFB_a6351 type ifb
SQM: cmd_wrapper: tc: SUCCESS: /sbin/tc qdisc replace dev SQM_IFB_a6351 root cake
SQM: QDISC cake is useable.
SQM: cmd_wrapper: ip: SUCCESS: /sbin/ip link set dev SQM_IFB_a6351 down
SQM: cmd_wrapper: ip: SUCCESS: /sbin/ip link delete SQM_IFB_a6351 type ifb
SQM: sqm_start_default: Starting layer_cake.qos
SQM: ifb associated with interface eth1: 
SQM: Currently no ifb is associated with eth1, this is normal during starting of the sqm system.
SQM: cmd_wrapper: ip: SUCCESS: /sbin/ip link add name ifb4eth1 type ifb
SQM: fn_exists: function candidate name: egress
SQM: fn_exists: TYPE_OUTPUT: egress is a function
SQM: fn_exists: return value: 0
SQM: cmd_wrapper: tc: invocation silenced by request, FAILURE either expected or acceptable.
SQM: cmd_wrapper: tc: FAILURE (2): /sbin/tc qdisc del dev eth1 root
SQM: cmd_wrapper: tc: LAST ERROR: Error: Cannot delete qdisc with handle of zero.
SQM: LLA: default link layer adjustment method for cake is cake
SQM: cmd_wrapper: tc: SUCCESS: /sbin/tc qdisc add dev eth1 root cake bandwidth 17000kbit diffserv3
SQM: sqm_start_default: egress shaping activated
SQM: cmd_wrapper: ip: SUCCESS: /sbin/ip link add name SQM_IFB_fbe2a type ifb
SQM: cmd_wrapper: tc: SUCCESS: /sbin/tc qdisc replace dev SQM_IFB_fbe2a ingress
SQM: QDISC ingress is useable.
SQM: cmd_wrapper: ip: SUCCESS: /sbin/ip link set dev SQM_IFB_fbe2a down
SQM: cmd_wrapper: ip: SUCCESS: /sbin/ip link delete SQM_IFB_fbe2a type ifb
SQM: fn_exists: function candidate name: ingress
SQM: fn_exists: TYPE_OUTPUT: ingress is a function
SQM: fn_exists: return value: 0
SQM: cmd_wrapper: tc: invocation silenced by request, FAILURE either expected or acceptable.
SQM: cmd_wrapper: tc: FAILURE (2): /sbin/tc qdisc del dev eth1 handle ffff: ingress
SQM: cmd_wrapper: tc: LAST ERROR: Error: Invalid handle.
SQM: cmd_wrapper: tc: SUCCESS: /sbin/tc qdisc add dev eth1 handle ffff: ingress
SQM: cmd_wrapper: tc: invocation silenced by request, FAILURE either expected or acceptable.
SQM: cmd_wrapper: tc: FAILURE (2): /sbin/tc qdisc del dev ifb4eth1 root
SQM: cmd_wrapper: tc: LAST ERROR: Error: Cannot delete qdisc with handle of zero.
SQM: LLA: default link layer adjustment method for cake is cake
SQM: cmd_wrapper: tc: SUCCESS: /sbin/tc qdisc add dev ifb4eth1 root cake bandwidth 210000kbit diffserv3 besteffort wash
SQM: cmd_wrapper: ip: SUCCESS: /sbin/ip link set dev ifb4eth1 up
SQM: cmd_wrapper: tc: SUCCESS: /sbin/tc filter add dev eth1 parent ffff: protocol all prio 10 u32 match u32 0 0 flowid 1:1 action mirred egress redirect dev ifb4eth1
SQM: sqm_start_default: ingress shaping activated
SQM: layer_cake.qos was started on eth1 successfully
root@OAGH:~#  cat /var/run/sqm/*debug.log
cat: can't open '/var/run/sqm/*debug.log': No such file or directory
root@OAGH:~# logread | grep SQM
Sat Jun 15 16:35:36 2024 user.notice SQM: Starting SQM script: layer_cake.qos on eth1, in: 210000 Kbps, out: 17000 Kbps
Sat Jun 15 16:35:36 2024 daemon.notice procd: /etc/rc.d/S50sqm: SQM: Starting SQM script: layer_cake.qos on eth1, in: 210000 Kbps, out: 17000 Kbps
Sat Jun 15 16:35:36 2024 user.notice SQM: layer_cake.qos was started on eth1 successfully
Sat Jun 15 16:35:36 2024 daemon.notice procd: /etc/rc.d/S50sqm: SQM: layer_cake.qos was started on eth1 successfully
Sat Jun 15 16:35:39 2024 user.notice SQM: Stopping SQM on eth1
Sat Jun 15 16:35:39 2024 user.notice SQM: Starting SQM script: layer_cake.qos on eth1, in: 210000 Kbps, out: 17000 Kbps
Sat Jun 15 16:35:39 2024 user.notice SQM: layer_cake.qos was started on eth1 successfully
Sat Jun 15 16:44:22 2024 user.notice SQM: Stopping SQM on eth1
Sat Jun 15 16:44:23 2024 user.notice SQM: Starting SQM script: layer_cake.qos on eth1, in: 210000 Kbps, out: 17000 Kbps
Sat Jun 15 16:44:23 2024 user.notice SQM: fn_exists: function candidate name: sqm_start
Sat Jun 15 16:44:23 2024 user.notice SQM: fn_exists: TYPE_OUTPUT: sqm_start: not found
Sat Jun 15 16:44:23 2024 user.notice SQM: fn_exists: return value: 1
Sat Jun 15 16:44:23 2024 user.notice SQM: Using generic sqm_start_default function.
Sat Jun 15 16:44:23 2024 user.notice SQM: fn_exists: function candidate name: sqm_prepare_script
Sat Jun 15 16:44:23 2024 user.notice SQM: fn_exists: TYPE_OUTPUT: sqm_prepare_script is a function
Sat Jun 15 16:44:23 2024 user.notice SQM: fn_exists: return value: 0
Sat Jun 15 16:44:23 2024 user.notice SQM: sqm_start_default: starting sqm_prepare_script
Sat Jun 15 16:44:23 2024 user.notice SQM: cmd_wrapper: ip: SUCCESS: /sbin/ip link add name SQM_IFB_3eb60 type ifb
Sat Jun 15 16:44:23 2024 user.notice SQM: cmd_wrapper: tc: SUCCESS: /sbin/tc qdisc replace dev SQM_IFB_3eb60 root cake
Sat Jun 15 16:44:23 2024 user.notice SQM: QDISC cake is useable.
Sat Jun 15 16:44:23 2024 user.notice SQM: cmd_wrapper: ip: SUCCESS: /sbin/ip link set dev SQM_IFB_3eb60 down
Sat Jun 15 16:44:23 2024 user.notice SQM: cmd_wrapper: ip: SUCCESS: /sbin/ip link delete SQM_IFB_3eb60 type ifb
Sat Jun 15 16:44:23 2024 user.notice SQM: cmd_wrapper: ip: SUCCESS: /sbin/ip link add name SQM_IFB_a6351 type ifb
Sat Jun 15 16:44:23 2024 user.notice SQM: cmd_wrapper: tc: SUCCESS: /sbin/tc qdisc replace dev SQM_IFB_a6351 root cake
Sat Jun 15 16:44:23 2024 user.notice SQM: QDISC cake is useable.
Sat Jun 15 16:44:23 2024 user.notice SQM: cmd_wrapper: ip: SUCCESS: /sbin/ip link set dev SQM_IFB_a6351 down
Sat Jun 15 16:44:23 2024 user.notice SQM: cmd_wrapper: ip: SUCCESS: /sbin/ip link delete SQM_IFB_a6351 type ifb
Sat Jun 15 16:44:23 2024 user.notice SQM: sqm_start_default: Starting layer_cake.qos
Sat Jun 15 16:44:23 2024 user.notice SQM: ifb associated with interface eth1:
Sat Jun 15 16:44:23 2024 user.notice SQM: Currently no ifb is associated with eth1, this is normal during starting of the sqm system.
Sat Jun 15 16:44:23 2024 user.notice SQM: cmd_wrapper: ip: SUCCESS: /sbin/ip link add name ifb4eth1 type ifb
Sat Jun 15 16:44:23 2024 user.notice SQM: fn_exists: function candidate name: egress
Sat Jun 15 16:44:23 2024 user.notice SQM: fn_exists: TYPE_OUTPUT: egress is a function
Sat Jun 15 16:44:23 2024 user.notice SQM: fn_exists: return value: 0
Sat Jun 15 16:44:23 2024 user.notice SQM: cmd_wrapper: tc: invocation silenced by request, FAILURE either expected or acceptable.
Sat Jun 15 16:44:23 2024 user.notice SQM: cmd_wrapper: tc: FAILURE (2): /sbin/tc qdisc del dev eth1 root
Sat Jun 15 16:44:23 2024 user.notice SQM: cmd_wrapper: tc: LAST ERROR: Error: Cannot delete qdisc with handle of zero.
Sat Jun 15 16:44:23 2024 user.notice SQM: LLA: default link layer adjustment method for cake is cake
Sat Jun 15 16:44:23 2024 user.notice SQM: cmd_wrapper: tc: SUCCESS: /sbin/tc qdisc add dev eth1 root cake bandwidth 17000kbit diffserv3
Sat Jun 15 16:44:23 2024 user.notice SQM: sqm_start_default: egress shaping activated
Sat Jun 15 16:44:23 2024 user.notice SQM: cmd_wrapper: ip: SUCCESS: /sbin/ip link add name SQM_IFB_fbe2a type ifb
Sat Jun 15 16:44:23 2024 user.notice SQM: cmd_wrapper: tc: SUCCESS: /sbin/tc qdisc replace dev SQM_IFB_fbe2a ingress
Sat Jun 15 16:44:23 2024 user.notice SQM: QDISC ingress is useable.
Sat Jun 15 16:44:23 2024 user.notice SQM: cmd_wrapper: ip: SUCCESS: /sbin/ip link set dev SQM_IFB_fbe2a down
Sat Jun 15 16:44:23 2024 user.notice SQM: cmd_wrapper: ip: SUCCESS: /sbin/ip link delete SQM_IFB_fbe2a type ifb
Sat Jun 15 16:44:23 2024 user.notice SQM: fn_exists: function candidate name: ingress
Sat Jun 15 16:44:23 2024 user.notice SQM: fn_exists: TYPE_OUTPUT: ingress is a function
Sat Jun 15 16:44:23 2024 user.notice SQM: fn_exists: return value: 0
Sat Jun 15 16:44:23 2024 user.notice SQM: cmd_wrapper: tc: invocation silenced by request, FAILURE either expected or acceptable.
Sat Jun 15 16:44:23 2024 user.notice SQM: cmd_wrapper: tc: FAILURE (2): /sbin/tc qdisc del dev eth1 handle ffff: ingress
Sat Jun 15 16:44:23 2024 user.notice SQM: cmd_wrapper: tc: LAST ERROR: Error: Invalid handle.
Sat Jun 15 16:44:23 2024 user.notice SQM: cmd_wrapper: tc: SUCCESS: /sbin/tc qdisc add dev eth1 handle ffff: ingress
Sat Jun 15 16:44:23 2024 user.notice SQM: cmd_wrapper: tc: invocation silenced by request, FAILURE either expected or acceptable.
Sat Jun 15 16:44:23 2024 user.notice SQM: cmd_wrapper: tc: FAILURE (2): /sbin/tc qdisc del dev ifb4eth1 root
Sat Jun 15 16:44:23 2024 user.notice SQM: cmd_wrapper: tc: LAST ERROR: Error: Cannot delete qdisc with handle of zero.
Sat Jun 15 16:44:23 2024 user.notice SQM: LLA: default link layer adjustment method for cake is cake
Sat Jun 15 16:44:23 2024 user.notice SQM: cmd_wrapper: tc: SUCCESS: /sbin/tc qdisc add dev ifb4eth1 root cake bandwidth 210000kbit diffserv3 besteffort wash
Sat Jun 15 16:44:23 2024 user.notice SQM: cmd_wrapper: ip: SUCCESS: /sbin/ip link set dev ifb4eth1 up
Sat Jun 15 16:44:23 2024 user.notice SQM: cmd_wrapper: tc: SUCCESS: /sbin/tc filter add dev eth1 parent ffff: protocol all prio 10 u32 match u32 0 0 flowid 1:1 action mirred egress redirect dev ifb4eth1
Sat Jun 15 16:44:23 2024 user.notice SQM: sqm_start_default: ingress shaping activated
Sat Jun 15 16:44:23 2024 user.notice SQM: layer_cake.qos was started on eth1 successfully
root@OAGH:~# tc -d qdisc
qdisc noqueue 0: dev lo root refcnt 2 
qdisc mq 0: dev eth0 root 
qdisc fq_codel 0: dev eth0 parent :5 limit 10240p flows 1024 quantum 1514 target 5ms interval 100ms memory_limit 4Mb ecn drop_batch 64 
qdisc fq_codel 0: dev eth0 parent :4 limit 10240p flows 1024 quantum 1514 target 5ms interval 100ms memory_limit 4Mb ecn drop_batch 64 
qdisc fq_codel 0: dev eth0 parent :3 limit 10240p flows 1024 quantum 1514 target 5ms interval 100ms memory_limit 4Mb ecn drop_batch 64 
qdisc fq_codel 0: dev eth0 parent :2 limit 10240p flows 1024 quantum 1514 target 5ms interval 100ms memory_limit 4Mb ecn drop_batch 64 
qdisc fq_codel 0: dev eth0 parent :1 limit 10240p flows 1024 quantum 1514 target 5ms interval 100ms memory_limit 4Mb ecn drop_batch 64 
qdisc cake 800d: dev eth1 root refcnt 2 bandwidth 17Mbit diffserv3 triple-isolate nonat nowash no-ack-filter split-gso rtt 100ms raw overhead 0 
qdisc ingress ffff: dev eth1 parent ffff:fff1 ---------------- 
qdisc noqueue 0: dev eth0.3 root refcnt 2 
qdisc noqueue 0: dev eth0.4 root refcnt 2 
qdisc cake 800e: dev ifb4eth1 root refcnt 2 bandwidth 210Mbit besteffort triple-isolate nonat wash no-ack-filter split-gso rtt 100ms raw overhead 0 
root@OAGH:~#  tc -s qdisc
qdisc noqueue 0: dev lo root refcnt 2 
 Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0) 
 backlog 0b 0p requeues 0
qdisc mq 0: dev eth0 root 
 Sent 195415850 bytes 182610 pkt (dropped 0, overlimits 0 requeues 9) 
 backlog 0b 0p requeues 9
qdisc fq_codel 0: dev eth0 parent :5 limit 10240p flows 1024 quantum 1514 target 5ms interval 100ms memory_limit 4Mb ecn drop_batch 64 
 Sent 68778353 bytes 49501 pkt (dropped 0, overlimits 0 requeues 6) 
 backlog 0b 0p requeues 6
  maxpacket 170 drop_overlimit 0 new_flow_count 1 ecn_mark 0
  new_flows_len 0 old_flows_len 0
qdisc fq_codel 0: dev eth0 parent :4 limit 10240p flows 1024 quantum 1514 target 5ms interval 100ms memory_limit 4Mb ecn drop_batch 64 
 Sent 37292994 bytes 43819 pkt (dropped 0, overlimits 0 requeues 2) 
 backlog 0b 0p requeues 2
  maxpacket 764 drop_overlimit 0 new_flow_count 1 ecn_mark 0
  new_flows_len 0 old_flows_len 0
qdisc fq_codel 0: dev eth0 parent :3 limit 10240p flows 1024 quantum 1514 target 5ms interval 100ms memory_limit 4Mb ecn drop_batch 64 
 Sent 27493100 bytes 27888 pkt (dropped 0, overlimits 0 requeues 0) 
 backlog 0b 0p requeues 0
  maxpacket 66 drop_overlimit 0 new_flow_count 12 ecn_mark 0
  new_flows_len 0 old_flows_len 0
qdisc fq_codel 0: dev eth0 parent :2 limit 10240p flows 1024 quantum 1514 target 5ms interval 100ms memory_limit 4Mb ecn drop_batch 64 
 Sent 4363318 bytes 11459 pkt (dropped 0, overlimits 0 requeues 1) 
 backlog 0b 0p requeues 1
  maxpacket 42 drop_overlimit 0 new_flow_count 2 ecn_mark 0
  new_flows_len 0 old_flows_len 0
qdisc fq_codel 0: dev eth0 parent :1 limit 10240p flows 1024 quantum 1514 target 5ms interval 100ms memory_limit 4Mb ecn drop_batch 64 
 Sent 57488085 bytes 49943 pkt (dropped 0, overlimits 0 requeues 0) 
 backlog 0b 0p requeues 0
  maxpacket 0 drop_overlimit 0 new_flow_count 0 ecn_mark 0
  new_flows_len 0 old_flows_len 0
qdisc cake 800d: dev eth1 root refcnt 2 bandwidth 17Mbit diffserv3 triple-isolate nonat nowash no-ack-filter split-gso rtt 100ms raw overhead 0 
 Sent 256667 bytes 901 pkt (dropped 0, overlimits 830 requeues 0) 
 backlog 0b 0p requeues 0
 memory used: 46784b of 4Mb
 capacity estimate: 17Mbit
 min/max network layer size:           54 /    1466
 min/max overhead-adjusted size:       54 /    1466
 average network hdr offset:           14

                   Bulk  Best Effort        Voice
  thresh       1062Kbit       17Mbit     4250Kbit
  target         17.1ms          5ms          5ms
  interval        112ms        100ms        100ms
  pk_delay          0us        3.9ms          3us
  av_delay          0us        318us          0us
  sp_delay          0us          3us          0us
  backlog            0b           0b           0b
  pkts                0          895            6
  bytes               0       256083          584
  way_inds            0           23            0
  way_miss            0           91            1
  way_cols            0            0            0
  drops               0            0            0
  marks               0            0            0
  ack_drop            0            0            0
  sp_flows            0            1            0
  bk_flows            0            1            0
  un_flows            0            0            0
  max_len             0         5864          127
  quantum           300          518          300

qdisc ingress ffff: dev eth1 parent ffff:fff1 ---------------- 
 Sent 3301553 bytes 3106 pkt (dropped 0, overlimits 0 requeues 0) 
 backlog 0b 0p requeues 0
qdisc noqueue 0: dev eth0.3 root refcnt 2 
 Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0) 
 backlog 0b 0p requeues 0
qdisc noqueue 0: dev eth0.4 root refcnt 2 
 Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0) 
 backlog 0b 0p requeues 0
qdisc cake 800e: dev ifb4eth1 root refcnt 2 bandwidth 210Mbit besteffort triple-isolate nonat wash no-ack-filter split-gso rtt 100ms raw overhead 0 
 Sent 3351069 bytes 3106 pkt (dropped 0, overlimits 1323 requeues 0) 
 backlog 0b 0p requeues 0
 memory used: 29004b of 10500000b
 capacity estimate: 210Mbit
 min/max network layer size:           60 /    1514
 min/max overhead-adjusted size:       60 /    1514
 average network hdr offset:           14

                  Tin 0
  thresh        210Mbit
  target            5ms
  interval        100ms
  pk_delay         56us
  av_delay         13us
  sp_delay          2us
  backlog            0b
  pkts             3106
  bytes         3351069
  way_inds            1
  way_miss           94
  way_cols            0
  drops               0
  marks               0
  ack_drop            0
  sp_flows            2
  bk_flows            1
  un_flows            0
  max_len         13560
  quantum          1514

root@OAGH:~# tc -s qdisc
qdisc noqueue 0: dev lo root refcnt 2 
 Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0) 
 backlog 0b 0p requeues 0
qdisc mq 0: dev eth0 root 
 Sent 195442013 bytes 182699 pkt (dropped 0, overlimits 0 requeues 9) 
 backlog 0b 0p requeues 9
qdisc fq_codel 0: dev eth0 parent :5 limit 10240p flows 1024 quantum 1514 target 5ms interval 100ms memory_limit 4Mb ecn drop_batch 64 
 Sent 68782792 bytes 49514 pkt (dropped 0, overlimits 0 requeues 6) 
 backlog 0b 0p requeues 6
  maxpacket 170 drop_overlimit 0 new_flow_count 1 ecn_mark 0
  new_flows_len 0 old_flows_len 0
qdisc fq_codel 0: dev eth0 parent :4 limit 10240p flows 1024 quantum 1514 target 5ms interval 100ms memory_limit 4Mb ecn drop_batch 64 
 Sent 37293743 bytes 43825 pkt (dropped 0, overlimits 0 requeues 2) 
 backlog 0b 0p requeues 2
  maxpacket 764 drop_overlimit 0 new_flow_count 1 ecn_mark 0
  new_flows_len 0 old_flows_len 0
qdisc fq_codel 0: dev eth0 parent :3 limit 10240p flows 1024 quantum 1514 target 5ms interval 100ms memory_limit 4Mb ecn drop_batch 64 
 Sent 27493932 bytes 27896 pkt (dropped 0, overlimits 0 requeues 0) 
 backlog 0b 0p requeues 0
  maxpacket 66 drop_overlimit 0 new_flow_count 12 ecn_mark 0
  new_flows_len 0 old_flows_len 0
qdisc fq_codel 0: dev eth0 parent :2 limit 10240p flows 1024 quantum 1514 target 5ms interval 100ms memory_limit 4Mb ecn drop_batch 64 
 Sent 4363567 bytes 11463 pkt (dropped 0, overlimits 0 requeues 1) 
 backlog 0b 0p requeues 1
  maxpacket 42 drop_overlimit 0 new_flow_count 2 ecn_mark 0
  new_flows_len 0 old_flows_len 0
qdisc fq_codel 0: dev eth0 parent :1 limit 10240p flows 1024 quantum 1514 target 5ms interval 100ms memory_limit 4Mb ecn drop_batch 64 
 Sent 57507979 bytes 50001 pkt (dropped 0, overlimits 0 requeues 0) 
 backlog 0b 0p requeues 0
  maxpacket 0 drop_overlimit 0 new_flow_count 0 ecn_mark 0
  new_flows_len 0 old_flows_len 0
qdisc cake 800d: dev eth1 root refcnt 2 bandwidth 17Mbit diffserv3 triple-isolate nonat nowash no-ack-filter split-gso rtt 100ms raw overhead 0 
 Sent 269635 bytes 959 pkt (dropped 0, overlimits 849 requeues 0) 
 backlog 0b 0p requeues 0
 memory used: 46784b of 4Mb
 capacity estimate: 17Mbit
 min/max network layer size:           54 /    1466
 min/max overhead-adjusted size:       54 /    1466
 average network hdr offset:           14

                   Bulk  Best Effort        Voice
  thresh       1062Kbit       17Mbit     4250Kbit
  target         17.1ms          5ms          5ms
  interval        112ms        100ms        100ms
  pk_delay          0us       3.15ms          4us
  av_delay          0us        259us          0us
  sp_delay          0us          3us          0us
  backlog            0b           0b           0b
  pkts                0          950            9
  bytes               0       268759          876
  way_inds            0           23            0
  way_miss            0           95            1
  way_cols            0            0            0
  drops               0            0            0
  marks               0            0            0
  ack_drop            0            0            0
  sp_flows            0            2            0
  bk_flows            0            1            0
  un_flows            0            0            0
  max_len             0         5864          127
  quantum           300          518          300

qdisc ingress ffff: dev eth1 parent ffff:fff1 ---------------- 
 Sent 3317813 bytes 3162 pkt (dropped 0, overlimits 0 requeues 0) 
 backlog 0b 0p requeues 0
qdisc noqueue 0: dev eth0.3 root refcnt 2 
 Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0) 
 backlog 0b 0p requeues 0
qdisc noqueue 0: dev eth0.4 root refcnt 2 
 Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0) 
 backlog 0b 0p requeues 0
qdisc cake 800e: dev ifb4eth1 root refcnt 2 bandwidth 210Mbit besteffort triple-isolate nonat wash no-ack-filter split-gso rtt 100ms raw overhead 0 
 Sent 3368217 bytes 3162 pkt (dropped 0, overlimits 1330 requeues 0) 
 backlog 0b 0p requeues 0
 memory used: 29004b of 10500000b
 capacity estimate: 210Mbit
 min/max network layer size:           60 /    1514
 min/max overhead-adjusted size:       60 /    1514
 average network hdr offset:           14

                  Tin 0
  thresh        210Mbit
  target            5ms
  interval        100ms
  pk_delay         63us
  av_delay         12us
  sp_delay          3us
  backlog            0b
  pkts             3162
  bytes         3368217
  way_inds            1
  way_miss           99
  way_cols            0
  drops               0
  marks               0
  ack_drop            0
  sp_flows            2
  bk_flows            1
  un_flows            0
  max_len         13560
  quantum          1514

root@OAGH:~# 

How does your CPU(SIRQ) looking while running the test?

How are tests on wired?

Thank you for replying.. You are onto something, A+ bufferbloat 194Mb down & 16Mb up.
Running top on RPi4 while test is in progress over wifi shows virtually no cpu usage

Install htop, and enable detailed cpu usage.

SIRQ is shown with purple bars.

Edit- So the speed is ok on wired?

Speed is ok (acceptable) on wired yes..
When you ask me to install htop, are you wanting it on RPi4 (router) or the wifiAP (r7800) ??
Thankyou

Edit... Installed htop on both Router & AP ran bufferbloat again but nothing noteworthy as far as CPU goes.. All purple entries remain around the 0% mark

OK...so after rebooting the AP all is good, same speed as wired A+ as far as Bufferbloat is concearned thanks for the tip of where to start. As I still haven't got a reason as to why it happened I will leave this unsolved for now and see how the next few days progress

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