Well, no one ever responded, but in case someone finds this later while googling or something.
Aparently there were two things to do in order to fix it.
First, get rid of all your auto-save opions, disable them. Load your latest game, whichever it might be, an auto-save or a normal save. After that, now make a new save, and delete your auto-save. Now go get killed by enemies or jumping off a cliff, whichever, just die and wait for the game to automatically reload the latest save. Save again, close game, now open again.
FIXED!
I had to do it exactly like that, because doing just the disable of auto-save, OR just the dying thing wouldn't know. It had to be both in that order, and yay I can now play without crashing and the lag isn't as bad :3