Not sure if this counts as a bug but I made my r7800 very unhappy with a startup config like this (see bolded)
tc qdisc add dev nssifb root handle 1: nsstbl rate 220000 burst 1Mb
tc qdisc add dev nssifb parent 1: handle 10: nssfq_codel limit 10240 flows 1024 quantum 1514 target 5ms interval 100ms set_default
tc qdisc add dev eth0 root handle 1: nsstbl rate 114000 burst 1Mb
tc qdisc add dev eth0 parent 1: handle 10: nssfq_codel limit 10240 flows 1024 quantum 1514 target 5ms interval 100ms set_default
exit 0
Made web browsing almost unusable. I'm guessing it was setting to 220,000 Mbit and going haywire. It wasn't clear from the first few posts that I had to use Mbit and not bits.
I also had some issues reaching line speed (250/15) with this build, but it could be a problem on my end.