Hi there.
Today I've installed OpenWrt 19.07.7 r11306-c4a6851c72 on my R7800. (as Access Point, not sure if the switch config is correct, would appreciate if somebody checked (Vlan) 
) That worked flawlessly. So far so good. However, when I tested my Wifi, the upload speed was twice as fast as my download speed. I've tested it with multiple devices, same result. I have no clue what the problem is.....
These are my speedtests and config files:
Upload:
iperf3 -c 10.168.1.1
Connecting to host 10.168.1.1, port 5201
[ 5] local 10.168.1.175 port 56210 connected to 10.168.1.1 port 5201
[ ID] Interval Transfer Bitrate Retr Cwnd
[ 5] 0.00-1.00 sec 68.1 MBytes 571 Mbits/sec 0 3.05 MBytes
[ 5] 1.00-2.00 sec 77.5 MBytes 650 Mbits/sec 69 2.27 MBytes
[ 5] 2.00-3.00 sec 77.5 MBytes 649 Mbits/sec 0 2.46 MBytes
[ 5] 3.00-4.00 sec 76.2 MBytes 640 Mbits/sec 0 2.62 MBytes
[ 5] 4.00-5.00 sec 76.2 MBytes 640 Mbits/sec 10 1.94 MBytes
[ 5] 5.00-6.00 sec 77.5 MBytes 650 Mbits/sec 0 2.04 MBytes
[ 5] 6.00-7.00 sec 76.2 MBytes 640 Mbits/sec 0 2.12 MBytes
[ 5] 7.00-8.00 sec 78.8 MBytes 661 Mbits/sec 53 1.55 MBytes
[ 5] 8.00-9.00 sec 76.2 MBytes 640 Mbits/sec 0 1.65 MBytes
[ 5] 9.00-10.00 sec 77.5 MBytes 650 Mbits/sec 0 1.72 MBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate Retr
[ 5] 0.00-10.00 sec 762 MBytes 639 Mbits/sec 132 sender
[ 5] 0.00-10.00 sec 760 MBytes 637 Mbits/sec receiver
And download:
iperf3 -c 10.168.1.1 -R
Connecting to host 10.168.1.1, port 5201
Reverse mode, remote host 10.168.1.1 is sending
[ 5] local 10.168.1.175 port 56218 connected to 10.168.1.1 port 5201
[ ID] Interval Transfer Bitrate
[ 5] 0.00-1.00 sec 39.4 MBytes 330 Mbits/sec
[ 5] 1.00-2.00 sec 45.8 MBytes 384 Mbits/sec
[ 5] 2.00-3.00 sec 45.5 MBytes 382 Mbits/sec
[ 5] 3.00-4.00 sec 45.2 MBytes 379 Mbits/sec
[ 5] 4.00-5.00 sec 42.9 MBytes 360 Mbits/sec
[ 5] 5.00-6.00 sec 44.1 MBytes 370 Mbits/sec
[ 5] 6.00-7.00 sec 43.9 MBytes 369 Mbits/sec
[ 5] 7.00-8.00 sec 45.3 MBytes 380 Mbits/sec
[ 5] 8.00-9.00 sec 44.7 MBytes 375 Mbits/sec
[ 5] 9.00-10.00 sec 46.0 MBytes 386 Mbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate Retr
[ 5] 0.00-10.01 sec 446 MBytes 374 Mbits/sec 1 sender
[ 5] 0.00-10.00 sec 443 MBytes 371 Mbits/sec receiver
/etc/config/network
config interface 'loopback'
option ifname 'lo'
option proto 'static'
option ipaddr '127.0.0.1'
option netmask '255.0.0.0'
config globals 'globals'
option ula_prefix 'fd1a:e15b:9e67::/48'
config interface 'lan'
option type 'bridge'
option ifname 'eth0.1 eth1.2'
option proto 'dhcp'
config switch
option name 'switch0'
option reset '1'
option enable_vlan '1'
config switch_vlan
option device 'switch0'
option vlan '1'
option ports '0t 1t 2 3 4 5 6'
/etc/config/wireless
config wifi-device 'radio0'
option type 'mac80211'
option hwmode '11a'
option path 'soc/1b500000.pci/pci0000:00/0000:00:00.0/0000:01:00.0'
option htmode 'VHT80'
option channel '36'
option legacy_rates '0'
config wifi-iface 'default_radio0'
option device 'radio0'
option network 'lan'
option mode 'ap'
option ssid 'wifi 5.0GHZ'
option encryption 'psk2'
option key 'xxxxxxxxxxxxxxx'
option ft_over_ds '1'
option ft_psk_generate_local '1'
option ieee80211r '1'
config wifi-device 'radio1'
option type 'mac80211'
option hwmode '11g'
option path 'soc/1b700000.pci/pci0001:00/0001:00:00.0/0001:01:00.0'
option htmode 'HT20'
option channel '5'
config wifi-iface 'default_radio1'
option device 'radio1'
option network 'lan'
option mode 'ap'
option key 'xxxxxxxxxxxxxx'
option ssid 'wifi'
option encryption 'psk2'
Only thing I noticed is that TX and RX Rates are not matching. :
Thank you for your time and have a nice day!
