Hey, is there any solution to the problem of not shooting at where the crosshairs are pointing?
Whenever I shoot, I end up shooting at quite a bit to the right and down from where the crosshair is actually at.

Also, I don't fit through quite a lot of the doors I come across... like this one attached. I somehow managed to go through one way, after several attempts of getting stuck on nothing, and now can't go back through. Can't reach switches near / under something without cheating, and it was supposed to be reached. Like, two gas tanks in a room, one switch under each. Able to trigger the left one, but unable to trigger the right one, despite visually bumping into it... I'M NOT THAT FAT!

This is unplayable...

This happens when your character's handedness is left or right.
You can try changing it to center or hidden. The latter, obviously, hides the weapon from your view, so use it only if you're ok with that.

I had a similar problem with being too big, and I think it was because I'd changed class under Player Setup.