FS#3791 - MT7603E disconnects or at the very least has terrible latency spikes under load

[openwrt-bot]

dana44_:

To reproduce just do a flent test:
//flent rrul -p all_scaled -l 60 -H netperf.bufferbloat.net -o image.png//

The only configuration changes was to set the wireless to enabled with encryption set to //mixed WPA2/WPA3 PSK, SAE (CCMP)//

Attached are images from a WSL2 instance on a windows 10 Intel 9560 laptop connected to the 2.4GHz radio (MT7603E) on a [[https://openwrt.org/toh/netgear/netgear_r6220|Linknetgear r6220]] running OpenWrt 21.02 rc1. The laptop will disconnect before finishing. When running on wrt3200acm or r7800 there are no connection issues like this. Test was also done with a local 192.168.1.2 host directly wired into the r6220.