Do you need your NVIDIA GPU? It sucks but the best solution is probably to disable this GPU and rely on the integrated GPU of your CPU. You can take a look at this guide from the Arch Wiki which explains how to do that

Sorry that I can’t help you with getting that GPU to work. I’ve seen some people claiming this MBP model works great with Linux but no info on if they’re using the NVIDIA GPU :/

Eh-e eh!

Interesting! To me inverting the x-axis just makes sense in 3rd person games: you see the back of the head of the character so if the back of the head moves to the left your field of view should move to the right. Basically, the joystick controls the head of the character from your POV. Never thought that was uncommon!

GameCube controllers controlled the camera by using buttons and not two thumbsticks

Played a bit of GameCube a few months ago and that’s definitely wrong — the c-stick isn’t great but it’s very much used for camera controls — however the rest of the article seems pretty good. Thanks for sharing!