I tried to follow the tips from others here but kept having issues. What worked for me is a bit different. Steam FSR must be off or the performance dip will make it unplayable (20fps). On the Steam side, I set: Disable Frame Limit: on; Allow Tearing: on; Half Rate Shading: on; (didn't experiment with TDP and GPU clock yet). On the Game options: Window mode must be Windowed, you'll have to play a bit untill you are able to open the options menu; Resolution is native, 1280x800; frame rate is 60fps; AMD FSR in Ultra Quality; Everything else is on high and Vsync is On; I've been playing it on the PS4 and here to compare and with these settings the Steam Deck feels prettier and more responsive, with a stable 60fps. Enjoy!