Someone in the comments asked the mod author if they could make different size versions (1k, 2k, 4k) and the author said they didn't want to do that but that it should be fine since some textures are 6k. I uninstalled the mod and ran xLODGen and DynDOLOD again and everything seems to be working fine. Might reinstall the Stave churches now. Also the mod author specifically said in their description to use xLODGen (or SSELODGen) on their mod so maybe I'll do that and hopefully it doesn't break again. Don't remember seeing that when I found the mod but maybe I'm blind.