Have you tried the default Fedora kernel? Also you didn't install TLP did you?

Two things:

• What input device(s) are you using? Are you using the built-in laptop keyboard, or a gamepad of sorts. (By Balatro, I'd assume it might even be happening with mouse.)
• Are you running these games on a platform like Steam, or are you running another way? (I'm assuming the answer is yes to Steam, by Balatro and Stardew.)

For Steam, try messing around with Steam input settings and see what happens.

Get resource usage under utilization and nvidia-smi output and post here.

Also, are you sure it's input lag, or is the entire machine pausing and hiccuping?

This kind of problem is going to require some deep debugging of the surface kernel drivers. This isn't going to be a simple or quick fix. Somebody is going to need to do some extensive debugging and analysis to chase down an issue like this. A solution to this problem could take a few hours, or it could take a few months of meticulous trial and error to narrow down the problem space and gather enough data to enable somebody to zero in on the problem.

If you want to dive into tracking down the problem yourself, I suggest starting with the kernel's own docs on the driver architecture and debugging tools, etc.