I am using Zwift on ATV4k for a year now and today I experienced my first crash (two crashes in a row actually). First appeared when after a 10min warmup I clicked “Join Now” button to move to the race (not TDZ, it wasn’t that overcrowded with participants). So after that crash my wahoo sensors didn’t want to connect and I missed the race. Shortly after another crash happened when I did quit to the login screen.
All circumstances of how I use Apple TV, Companion App, Zwift, Sensors, was just as I usually do (I quit all background apps before start). My ATV heve only 3 apps installed including Zwift, so that’s not storage issue.
Hope that helps,