As with the update to 3.5.1 in the preview Channel, updating to 3.5.5 stable made this bug came back. GPU is oscillating between 200 and 1040 MHz, creating stutters and framedrops in game. Setting GPU to manual mitigate the issue, but this Is very annoying for a stable update. Just making a post to gather all of us and maybe get some attention from Valve.
Yeah I just got a new OLED deck and am experiencing this issue like crazy. Games are unplayable without manual GPU clock turned on. They tried to tell me it was “allow tearing” which was the issue LOL