Great. Fantastic. F***ing dandy. (Control issues)

So, as of the latest update (I think?) it's been a pain in the ass to move my character around (w/ mouse+keyboard). He doesn't move at all (or just barely) unless I hold down the sprint-button, and even then I can almost only move him left and right. Up and down is still a major issue.

So I decided to try out my Xbox 360 gamepad instead. You'd think that this'd work better since the game was designed for use with gamepads. Nope. Wrong. No cigar there. I can't even move him an inch now. He's just tapdancing on the spot. And even when I do manage to move him, it's like trying to run through thick mud or something. Snail pace.

I'm not using any emulation software, the gamepad is a wired one and I'm using the latest drivers (1.20 something).  Somehow, I need to enter the options menu in the game's Main Menu, change something and then change it back (and confirm it) to be able to control the game with the gamepad. I couldn't select any choices in the menu without doing that first.

Help?