First up, and thrilling as ever, is the matter of storage.
At least, it’s possible for you to for the first couple of chapters.
Most interiors run better but really, the Hawawii-set portions demand a less strenuous set of visual options.

And, to stress, thats 30fps in the absolute worst case.
For a modern, fully 3D game on handheld tech, its not unacceptably uggo either.
Enough to walk the Verified walk, in any case.

Nobody could claim Infinite Wealth sits among the verybestSteam Deck games.
Besides needing mostly minimal configs, it occasionally bodges the 16:10 display with horizontal bars accompanying cutscenes and menus.
Want to keep Ichiban and pals in your backpack?