CTD on entering Moldering Ruins

[Demorticus]

So I have Dawnguard installed, and I've now encountered another problem in the growing list of concerns I have for the DLC. Whenever I attempt to enter Moldering Ruins, the second I activate the trap door, the game CTD's. I used to experience this issue with Bonechill Passage, but before the unofficial Skyrim patch. Then, I would have to go into windowed mode to make it through. I tried the same this time, figuring it might be a similar problem, but no luck. I still crash. I'm at a loss as to how to fix this. My load order is attached with the cut-off 85 being Unique Taverns.

[Demorticus]

Using a recommendation on another thread here, I started from my oldest save and checked each one to see if they'd crash doing the same thing. I worked my way across a dozen saves, all the way up to..surprisingly, an autosave leaving the Rorikstead Inn literally one minute before entering the ruins. That one didn't crash, and I only lost one minute of gameplay between the two saves. So...I don't know what the problem is with that one save. In one minute between previously leaving the inn and walking over to Moldering Ruin, something happened which made it impossible to enter without CTD, but doing the exact same thing changed it all.

 

I opine this may have something to do with another issue I've encountered. Recently, scripts have been running very slowly. Whenever I complete a quest, where as usually the dialogue finishes and I give an item/ receive an item, it will be stuck in the dialogue view for a minute, then finally exit out and say "quest completed, etc." I have so many mods that add complex scripts too that I believe they might cause bloating of some sort. ATTT doesn't rotate between weapons as quick as originally. For instance, I carry a Wakizashi and Tanto from Weapons of the Third Era. With ATTT, they both appear equipped. Whenever I switch to them and switch back to something else, it hesitates to equip the "Sheathed" version now, whereas before it was instantaneous.

 

Anyways, luckily I can continue on (already cleared the ruin) until another problem arises.