Alternate Old Forest and Vaults don't play nice

[Infinitum]

Specifically, the blighted areas tend to bleed into the large one (the one with the thieves and trolls). Might have been unrelated but my fps dropped to pitiful levels in that area, and I did get a fair amount of error messages upon entering the map (albeit nothing that prevented me from playing further, save the lag).

[Theyleon]

Also noted crystals replacing the walls of the small thieves building one (the one with the 3 gems behind a digable wall)