game shutting down (during build mode)

ive not done much gameplay since the update, mainly cas and build mode, and this is an issue ive only encountered in build mode (also i play on a laptop, on laptop mode, in case thats relevant)

randomly (i haven't noticed any pattern in the timing), my game has been freezing, cutting to black, and shutting itself down. first, it was when i was placing a cc item, so i didn't use it next time (or since). the next time it happened, i can't remember what i was doing, but there had been a BE exception report about a single gameplay-related package file that apparently had tuning issues. i had been thinking i could postpone sorting it out bc theres no way a single package file not even in use could be an issue? but i redownloaded the mod since i wasn't sure if i had the most recent version. i got the same exception report, the game shut down again, and i removed the mod.

just now, with a fully fixed, up-to-date and glitchless mods folder (if some duplicate cc, but thats always been the case and i can't be bothered to sort it out (but actually while im here if anyone has an easy way to sort that out that would be nice)), i was just moving the camera around, inspecting the build that i am redoing YET AGAIN, the game shut down. i wasnt placing anything, deleting anything, or actively using mods that i havent used before without issues or potentially broken mods. i was literally just moving the camera, and the game freezes, the screen goes black, and im back on the steam page.

i am going to lose my mind if this isnt fixed soon. i haven't been able to find anyone else with this issue so it might just be me, and if it is if someone could offer a fix i owe you my (sims') life

also gonna note my game has been taking unnecessarily long to load occasional things to the point where ive had to force quit the game with task manager, and when i try doing the same things again they dont take nearly as long. might be related but idk