I had to go back to the v3 cam since the v2 detected when the lights turned off and interpreted this as movement and turned them back on.
Seems like I’m not the only one experiencing random turn off as well - Cam V3 Automation To Turn ON Garage Lights - #15 by Seapup
Hopefully Wyze will fix the bug soon.
In the meantime, I’m looking for a better (faster / more reactive) solution probably using PIR.