Thanks for the response! I deactivated one mod at a time like you said and figured out that Mojave Sandy Desert was the culprit, I looked in the comments to see if there was a fix and the mod author said it was already included in the main file, but I downloaded the old hotfix and merged it with the main file. That fixed the shiny sand part of the issue. When I deactivated the mod the rubble in the houses also returned to the normal texture, but when I activated it with the hotfix installed the rubble got the sand texture again, only now non-shiny. I looked through the comments of the mod but it seems like nobody else has that issue.