Hopeless but still asking.

Hi. I have ran into a mod issue that I cant seem to resolve with a 50/50 method because testing for the issue seems to be irregular and unreliable. I'll be playing and out of nowhere it appears snow textures become broken, i get squares with a ? mark on them and sometimes the snow on ground goes rainbow with ? marks. Thing is just restarting the game makes it temporarily stop and the issue doesn't seem to be triggered by anything i can ascertain so i cant try to fifty method something that I can't trigger a test for. I am trying to find a way to find the problem and was just wondering if anyone has recently had a similar issue with snow textures. I quite properly checked the obvious sources and removed anything involving landscaping or world recolors but I don't have any world retextures to begin with. I am frankly frustratingly at a loss and just hoping someone might have had a similar experience. I have searched problematic cc for years and the only reason I am asking is because my traditional 50/50 method is proving unreliable currently until I can find a way to trigger the problem .