Okay so this is a... Very baffling glitch, one I had over a year ago, that I didn't have until now.

It starts with me entering a modded place I made... This place in question is very big, about as big as an interior cell can be. It has several actors, I think about 20-50 in them, this ship which levitates and moves around on it's own, amongst other things... Maybe due to that it's highly CPU intensive?... I don't know. The strange thing is I've been here before at level 20 or so without any problems, but I come back at level 35... And all of a sudden a baffling bug is happening to me. The cell does load, but then my screen turns almost pitch black. Not totally black, as if I turn around, I can vaguely see light sources, and notice I can still move.

Also bizarrely the sound still works.

Also oddly, if I use night vision my screen turns nearly completely white.

What is even more bizarre, is whenever this bug happens, I can save, but I cannot load, the only option is to close Skyrim and relaunch it.

Can someone please tell me what you think might be causing this problem, and how I could fix it? Any advice would be greatly appreciated.