I seldom crash unless i have been playing 6+ hours or more. And even then thats rare, maybe once a week or so. I usually take that as a msg from God telling me to go to bed! lol
Honestly I have bugged my game a lot,playing around with mods and trying things out. Everything from missing textures to the game refusing to start a new game (currently have that bug, but I know the mod causing the problem and it wont be in my next play through, Had to cheat, start a new game, then add the mod to be able to play it. I'll let that mod author know that im also experiencing that problem so maybe he can fix it for others)
This wasnt always true. On my old system (AMD A8, 8 gig ram with a radeon 7950 vid card) Id crash oh every three or four hours. Currently Im running an AMD A10, 16 gig ram with a Radeon Nano vid card and everything is golden. I use LOOT to arrange my pluggins, then manually move all settlement adding mods and scrap everything to the bottom of the list after adding any largish mods, for new play throughs only. Adding mods mid play and or rearranging the load order tends to really create serious problems.