I use Linksys WRT32X as my main drive. Wireless is unstable on OpenWrt 21.02.0-rc3. Wi-Fi client does not disconnect but it won't receive/transmit any data for a minute or so. This happens regularly.
I had no issues with OpenWrt 19.07.7.
I downgraded wireless firmware from 22.214.171.124 to the previous, 126.96.36.199, which is what 19.07 uses. Wireless is stable for me now.
If you have a Linksys WRT32X or WRT3200ACM, please compare Wi-Fi stability on OpenWrt 21.02.0-rc3
with my build which includes firmware 188.8.131.52.
Get my 21.02.0-rc3 image with 184.108.40.206 wireless firmware here:
I pushed a PR to openwrt-21.02 trunk to downgrade the firmware to 220.127.116.11.