Game frozen in time

lionsaults  Are you playing with mods active in that random save file while waiting for mod updates?   The reason I ask is because if you are playing with mods out of the game when playing in that save file, then that is a clear indication that it is a mod problem.  If are playing with all your mods and CC still in the game while playing that random save and don't have the issue, that does not mean that your mods are good because there are no readily noticeable issues, particularly if your main play save is a long term save.  If you have changed mods while playing a long term save, some of those you have removed may have left data behind and the effects may not show immediately but may manifest later, long after the mod has been out of the mods folder.  

Hope this helps.