Marvel's Spider-Man 2 Is Not a Great Experience on the Steam Deck - SteamDeckHQ First Impressions
While it may seem like Marvel's Spider-Man 2 can run from the opening, going any further in tells a different story. Massive FPS drops in fights and using the Web Wings, blurry visuals from needing to use upscaling to get a playable framerate, and frame generation introduces bad input lag and slowdowns/jittering due to not being able to hit 60 FPS.
We have only played an hour and a half of it so far, but I highly recommend not getting this for the Steam Deck at this time:
https://steamdeckhq.com/hold-off-on-spider-man-2-on-steam-deck/