Holy Hell is this frustrating. Mine started with being unable to enter or exit a building or city with a gate without getting stuck on a black loading screen. Then it morphed to the point of getting a CTD any time I tried to quicksave or do a regular save. I deleted SkyBirds, Birds of Skyrim, Diverse Dragons and Footprints. I was then able to load a save and re-save without getting a CTD. I also cleaned my save using ReSaver and can load that save fine, then resave again without issue. Now I'm back to the point where if I exit Elysium Estate I get stuck on the loading screen. The odd thing I'm seeing now, is that after closing Skyrim, there's an autosave of me outside of Elysium Estate that I can load, resave just fine. ReSaver isn't catching any issues, and I made sure there was nothing left from any of the mods I deleted. I'm at about 110 hours on this save, the size is 8.9MB and I'm at level 32. I'm running out of things to try besides starting over again, which is such a pain.