I'd argue the opposite. vanilla save systems in FNV are attrocious and loading auto saves or entering doors will absolutely corrupt a game.
CASM in its current updated state is incredible and a necessity to modding fnv now. Save Bloating was problem for the original made by Cipsis, the remake by Gribbleshnibit8 that is curated by RoyBatterian, and Bethesda vanilla save systrem. This mod ---> https://www.nexusmods.com/newvegas/mods/45652?tab=files <---- has been free of bloating for years.
One intersting thing about how bethesda games do saves. When you load the game, it doesnt actually roll back time. It just resets cells. Speed runners use saving and loading the game as a method of breaking the physics of the engine. So what it sounds like to me is something broke and now all your scripts that run in one save, get duplicated into your next load. Or where interupted while running and now exist in your game, broken.
THe crosshair thing actually happens to me asll the time when i reload saves. Closing and reopening the game usually fixes it for me, or going through a load door.
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so what i am supposed to do with this? Eat it?