I think I've found the source of my crashes. My mods can't depend on Update.esm cause it's corrupted, and thats (hopefully) why I crash everytime I enter and exit the pause menu and run around. I've verified integrity of game cache, but wrye bash still says it's corrupted. What do I do?

If steam says its not corrupted, its probably a mod causing the problem possibly one that changes the update.esm data.

I've fixed the problem. Turned out I had to redownload Update.esm and regenerate my INI files.