Not sure if it's something similar but I had issue where attempting to setup a wifi smart plug locked up the router for a minute (until the smart plug gave up t

Not sure if it's something similar but I had issue where attempting to setup a wifi smart plug locked up the router for a minute (until the smart plug gave up trying to connect to the router). Wired ethernet still works but the routers show 100% cpu usage on its management interface and the 2.4ghz wifi stopped working (didn't check the 5ghz one). I didn't dig in more because my wife was in a zoom meeting.