Interesting, I haven’t seen this problem before. Does this only happen in this zone? Was it all black immediately when the zone loaded, or did it happen afterwards? Is the problem permanent?
Only happen in this zone, its permanent until you leave the area with a portal or go to the next area, normally black immediately when you change to this concrete zone. Seems like a problem with some textures in that specific area, i installed the game in a SSD and never haved problems loading textures, but seems like the area load before the textures.