 What does "calulate overhead" do for this script?
 Why isn't this utilized more?
 tc command shows no stats actually changing?
I've found for my personal use it works great. My ingress is controlled via an unknown shaper by my isp and for gaming/streaming it's hands down simple, but effective. I also
use a script created by @shm0 to disable ALL offlods (excellent work).
qdisc hfsc 1: root refcnt 2 default 30
Sent 418950647 bytes 4551413 pkt (dropped 0, overlimits 693026 requeues 0)
backlog 0b 0p requeues 0
qdisc fq_codel 400: parent 1:40 limit 800p flows 1024 quantum 300 target 5.0ms interval 100.0ms memory_limit 4Mb
Sent 97387730 bytes 1394574 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
maxpacket 5656 drop_overlimit 0 new_flow_count 9893 ecn_mark 0
new_flows_len 0 old_flows_len 1
qdisc fq_codel 100: parent 1:10 limit 800p flows 1024 quantum 300 target 5.0ms interval 100.0ms memory_limit 4Mb
Sent 309536 bytes 2977 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
maxpacket 486 drop_overlimit 0 new_flow_count 2687 ecn_mark 0
new_flows_len 1 old_flows_len 41
qdisc fq_codel 200: parent 1:20 limit 800p flows 1024 quantum 300 target 5.0ms interval 100.0ms memory_limit 4Mb
Sent 26810301 bytes 181888 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
maxpacket 1412 drop_overlimit 0 new_flow_count 12111 ecn_mark 0
new_flows_len 0 old_flows_len 2
qdisc fq_codel 300: parent 1:30 limit 800p flows 1024 quantum 300 target 5.0ms interval 100.0ms memory_limit 4Mb
Sent 294442948 bytes 2971972 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
maxpacket 5656 drop_overlimit 0 new_flow_count 185864 ecn_mark 0
new_flows_len 0 old_flows_len 1
qdisc ingress ffff: parent ffff:fff1 
Sent 11404262989 bytes 8057927 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
+(1:) hfsc
 Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
 backlog 0b 0p requeues 0

+(1:1) hfsc sc m1 0bit d 0us m2 9800Kbit ul m1 0bit d 0us m2 9800Kbit
 Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
 backlog 0b 0p requeues 0

+(1:10) hfsc rt m1 5716Kbit d 79us m2 980Kbit ls m1 5716Kbit d 79us m2 5444Kbit ul m1 0bit d 0us m2 9800Kbit
 Sent 309536 bytes 2977 pkt (dropped 0, overlimits 0 requeues 0)
 backlog 0b 0p requeues 0

+(1:20) hfsc rt m1 5215Kbit d 199us m2 4900Kbit ls m1 5215Kbit d 199us m2 2722Kbit ul m1 0bit d 0us m2 9800Kbit
 Sent 26810301 bytes 181888 pkt (dropped 0, overlimits 0 requeues 0)
 backlog 0b 0p requeues 0

+(1:30) hfsc ls m1 0bit d 100.0ms m2 1361Kbit ul m1 0bit d 0us m2 9800Kbit
 Sent 294493086 bytes 2972098 pkt (dropped 0, overlimits 0 requeues 0)
 backlog 0b 0p requeues 0

+(1:40) hfsc ls m1 0bit d 200.0ms m2 272Kbit ul m1 0bit d 0us m2 9800Kbit
Sent 97387730 bytes 1394574 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
+(1:) hfsc
 Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
 backlog 0b 0p requeues 0

+(1:1) hfsc sc m1 0bit d 0us m2 48999Kbit ul m1 0bit d 0us m2 48999Kbit
 Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
 backlog 0b 0p requeues 0

+(1:10) hfsc rt m1 11106Kbit d 39us m2 4899Kbit ls m1 11106Kbit d 39us m2 27221Kbit ul m1 0bit d 0us m2 48999Kbit
 Sent 417871 bytes 2638 pkt (dropped 0, overlimits 0 requeues 0)
 backlog 0b 0p requeues 0

+(1:20) hfsc rt m1 25533Kbit d 39us m2 24499Kbit ls m1 25533Kbit d 39us m2 13610Kbit ul m1 0bit d 0us m2 48999Kbit
 Sent 45826590 bytes 92668 pkt (dropped 0, overlimits 0 requeues 0)
 backlog 0b 0p requeues 0

+(1:30) hfsc ls m1 0bit d 100.0ms m2 6805Kbit ul m1 0bit d 0us m2 48999Kbit
 Sent 7320662440 bytes 5211250 pkt (dropped 0, overlimits 0 requeues 0)
 backlog 0b 0p requeues 0

+(1:40) hfsc ls m1 0bit d 200.0ms m2 1361Kbit ul m1 0bit d 0us m2 48999Kbit
Sent 4149338464 bytes 2750688 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0