Found your problem, and I hate to say it, but your save is toast. Warzones is EXTREMELY outdated, it hasn't been updated in well over a year, it will completely destroy your game save on its own, let alone when it's combined with that mess of a mod list you have. Tundra Defence is another heavily scripted WIP mod that will also give you problems, stack that with Warzones and you have problems. Civil War Overhaul - This mod alone, while being updated, is HEAVILY glitched and buggy, it basically modifies half of the vanilla game. Deadly Spell Impacts causes freezing when using or seeing spells being used, period. There is a thread on here discussing it. Those are the ones I can see straight away, however there are probably many more iffy mods in your load order, unfortunately you won't be able to salvage that same game so I'd follow the STEP steps to revert back to vanilla and be MUCH more careful regarding what mods you use.