I don't know why but Geirmund's Hall is buggy as Hell for me. When I enter it the first time alot of the walls and floor is missing and all I can see is just a sea of blue. If I walk into an area with no floor/walls I fall through for a few seconds and then land somewhere. If I back out of Geirmund's Hall and then try to enter it a 2nd time I load for a bit then CTD.
I'm not sure if it's mods or what have you but I can't complete Forbidden Legend with this problem. Does anyone else have this issue?