I get this every once in a while when gaming with a modlist half the size of yours. Generally if you type in a console teleport you can fix it. That is usually how I fix my issue at least... Depending on where you are just make sure that you loading an area outside of the current cell. Example - if you are crashing in WR my fav spot to travel to is Kynesgrove so just type in coc kynesgrove into the console. Doing this has always fixed the errors or CTD that I have experienced when trying to fast travel. Hope this helps you out!