No, hardware decoding of VP9 and AV1 works great on Chrome; I see it working with two Nvidia GPUs and a Radeon 780M

I’ve settled with everything on medium (including textures, otherwise not enough RAM/VRAM in the device), + FSR2 on quality or balanced.

If you want the game to not be a judder-fest, though, you have to be using the Deck’s own framerate limiter. The game’s built-in limiter doesn’t help, even with triple buffering vsync. Thankfully it’s one of those games where input latency doesn’t matter anywhere near as much. 60 Hz, 30 fps cap.