Fix stuttering & inconsistent FPS / frametimes

[MrEWhite]

So it seems that 60+ FPS interpolation is broken on modern systems. If you press Ctrl + Home while in game, it disables interpolation at 60+ FPS and runs the game at a capped 60 FPS, and that seems to stop the stutter.

Make sure you keep Hi-Fi Sim enabled though, or else it'll drop the framerate to 30 FPS.

Also, looks like this always happened, even on older cards:
https://www.youtube.com/watch?v=cw9BbdPQfrQ
https://www.youtube.com/watch?v=oV68AyNZTUA
https://www.youtube.com/watch?v=FfQcG_NkkPw