A lot of mods' changes get baked into a save and can have an influence on future game behaviour even when said mods have been deleted from the game. So I take it that there's absolutely no fix for this, and you just have to call it quits on FO4?Īs far as I've seen (having around ten-thousand hours in FO4 right now) it first of all has to do with bad allocation of RAM (both system and Video) but has more chance to happen when having added and deleted a lot of mods in the course of one play-through.