wifi network freeze Intermittently

The ping lost or time increase Intermittently
This issue cause network freeze
This happens in mt7603(2.4G) or mt7612e(5G) on mt7621

ping log:

PING 192.168.16.1 (192.168.16.1) 56(84) bytes of data.
64 bytes from 192.168.16.1: icmp_seq=1 ttl=64 time=4.37 ms
64 bytes from 192.168.16.1: icmp_seq=2 ttl=64 time=1.18 ms
64 bytes from 192.168.16.1: icmp_seq=3 ttl=64 time=1.24 ms
64 bytes from 192.168.16.1: icmp_seq=4 ttl=64 time=2.70 ms
64 bytes from 192.168.16.1: icmp_seq=5 ttl=64 time=1.17 ms
64 bytes from 192.168.16.1: icmp_seq=6 ttl=64 time=1.20 ms
64 bytes from 192.168.16.1: icmp_seq=7 ttl=64 time=2.11 ms
64 bytes from 192.168.16.1: icmp_seq=8 ttl=64 time=1.15 ms
64 bytes from 192.168.16.1: icmp_seq=9 ttl=64 time=18.0 ms
64 bytes from 192.168.16.1: icmp_seq=10 ttl=64 time=1.25 ms
64 bytes from 192.168.16.1: icmp_seq=11 ttl=64 time=2.78 ms
64 bytes from 192.168.16.1: icmp_seq=12 ttl=64 time=2.30 ms
64 bytes from 192.168.16.1: icmp_seq=13 ttl=64 time=2.24 ms
64 bytes from 192.168.16.1: icmp_seq=14 ttl=64 time=2.61 ms
64 bytes from 192.168.16.1: icmp_seq=15 ttl=64 time=224 ms
64 bytes from 192.168.16.1: icmp_seq=16 ttl=64 time=208 ms
64 bytes from 192.168.16.1: icmp_seq=17 ttl=64 time=2.31 ms
64 bytes from 192.168.16.1: icmp_seq=18 ttl=64 time=2.45 ms
64 bytes from 192.168.16.1: icmp_seq=19 ttl=64 time=1.15 ms
64 bytes from 192.168.16.1: icmp_seq=20 ttl=64 time=2.67 ms
64 bytes from 192.168.16.1: icmp_seq=21 ttl=64 time=2.71 ms
64 bytes from 192.168.16.1: icmp_seq=22 ttl=64 time=0.973 ms
64 bytes from 192.168.16.1: icmp_seq=23 ttl=64 time=1.07 ms
64 bytes from 192.168.16.1: icmp_seq=24 ttl=64 time=2.75 ms
64 bytes from 192.168.16.1: icmp_seq=25 ttl=64 time=4.18 ms
64 bytes from 192.168.16.1: icmp_seq=26 ttl=64 time=3.37 ms
64 bytes from 192.168.16.1: icmp_seq=27 ttl=64 time=2.64 ms
64 bytes from 192.168.16.1: icmp_seq=28 ttl=64 time=2.51 ms
64 bytes from 192.168.16.1: icmp_seq=29 ttl=64 time=2.61 ms
64 bytes from 192.168.16.1: icmp_seq=30 ttl=64 time=2.70 ms
64 bytes from 192.168.16.1: icmp_seq=31 ttl=64 time=1.17 ms
64 bytes from 192.168.16.1: icmp_seq=32 ttl=64 time=218 ms
64 bytes from 192.168.16.1: icmp_seq=33 ttl=64 time=96.1 ms
64 bytes from 192.168.16.1: icmp_seq=34 ttl=64 time=79.5 ms
64 bytes from 192.168.16.1: icmp_seq=35 ttl=64 time=1.22 ms
64 bytes from 192.168.16.1: icmp_seq=36 ttl=64 time=2.70 ms
64 bytes from 192.168.16.1: icmp_seq=37 ttl=64 time=1.15 ms
64 bytes from 192.168.16.1: icmp_seq=38 ttl=64 time=2.45 ms

Start by reproducing the intermittent ping latency on the reported mt7603 and mt7612e hardware running on mt7621, using the supplied ping pattern. Then inspect the relevant mt76 driver code and collect the missing environment, logs, and reproduction details. Done means identifying a reproducible driver fault and confirming a fix removes the packet loss or latency spikes.