I had the same issue. I was dreading going though some 70 mods but I noticed a wood pile in the path that was loading the next grid or cell. I had the Wood pile/chopping block texture fix mod. I un-checked it an it works just fine. I think you're having a texture issue. That's what I have found to be most of my CtD issues. update: It was the Project Parallax - Windhelm - PP - Windhelm HD2K V3 mod as well. So I have two mods that CtD movement in Windhelm. Now both are unloaded and I can move around. I also have ENB .113 and Parallax is compatible with .112 not .113 yet. Good luck, Ash