5f9092eef2bd0dcf Sorry, I was looking at two threads at once and got my wires crossed. Options.ini has a fullscreen setting, which you can set to 0 (zero), or you can add -w to the launch options box to force the game to open in windowed mode. Since we're on the subject though, try -dx9 to force DirectX 9 mode since DX11 isn't working.
puzzlezaddict sadly, it didn't work either with the -dx9
anyhoo, i tried open the Sims 4 on my PC (Steam) and it launched with no problem at all. but ever since i got a Steam Deck, i love playing games on my Deck. i've been playing TS4 for more than 600 hours on the Deck and it ran smoothly (with fullscreen mode). the problem occurred since last week's update. maybe EA should fix the problem for other platforms, like Steam Deck?
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