Skyrim was running perfectly fine, and now it's stuttering all of the sudden.

I was playing Skyrim the other day, and everything was working fine. I had stable 60fps, and no stuttering or freezing of any kind. Then my game crashed, and so after making a merged patch to make sure this didn't happen again (or at least as often) when I loaded up the game again and got into Whiterun, looking around causes stuttering and the game freezes for a few seconds. I ran my textures through the texture optimizer and even tried disabling them in Mod Organizer, which worked for about 5 minutes before the stuttering returned. I merged plugins, removed mods, nothing worked. Even turning off my ENB and running plain ENBoost did nothing to help. If anybody wants to help, my load order and ini files are spoilered in this thread here: http://forums.nexusmods.com/index.php?/topic/4012400-skyrim-was-running-smooth-and-suddenly-it-started-stuttering/#entry36666130