I just beat lee hong assassination level and got to the uwa tribe level but at end of lee hong assassination level the mouse crosshairs got a little off but i still made it to exit the level and get to next level but when i started next level the same issue and the crosshairs were off. I went to another profile and then started the same level and there wasn't an issue well now it seems like an issue how do i fix it....

I'm assuming this is another one of those scams by valve where they sell you a game that doesn't work right out the box. If you have to download 3rd party software and do this do that just to get the game to run on 1440 16:9, then it's a SCAM.

I've tried several Proton versions, changing the game config (the config screen does run correctly), and the best I've got is a black screen.

It would be great if they do that to fix a lot of the issues the game have

I need to use the bathroom