So a fix is probably either pretty complicated or so simple that its hiding under our noses. I've tried installing open cities to get rid of the problem which helped but then there were still problems entering shops and such. I can run around and do a lot of stuff which is cool but I am not having a good time with the loading times. Before I got all my graphics intensive mods I had a bunch of regular game enhancing and lengthening mods and had not to many infinate load screen problems, but now its every time to the point to where the game is unplayable. I have around 170 mods in my game and it took me 4 to 5 days to get the game to run without an immediate ctd, but thats also including the time it took getting the game to work properly with the mods, a few glitches like missing parts and then bam I was done modding, then the infinate load screens had become a major problem. This is a really painful and long process and it may make things worse. after you've done this and the save has loaded, create another save (make sure there are no mods activated) then reactivate or re-install all the mods you previosly had.this is an extremely easy way to fix this problem and is easier then completely restarting all of you progress, so try it =D Then just load a save that has the least mods needed to load and try to load it with NO mods activated or installed. Guyz if you can goto a save but everytime you exit a place or fast travel.

Skyrim better loading screens