I rolled back my skyrim.exe to 1.5.39, redownloaded and installed skse 2.0.7 (including scripts), and replaced the current versions of RaceMenu, moreHUD, FISSES, Havok Fix, Papyrus Utility, and CBP Physics with their previous versions. And i deactivated Dyndolod, TexGen, and xLodGen because dyndolod was producing an error message about not using the correct version of papyrus util (needs 3.3 or higher even though I have 3.4 installed). But still nothing. Same result, loads for 20-30 seconds and then crashes.