I was doing a quest and I encountered a Glowing One under the bridge to the Repcon facility. When The Glowing One was in my sight the screen went black, the only thing I was able to see was my HUD. I turned around (the glowing one was out of my sight then) and the screen was normal again. When I turned around again (now he was in my sight again), the screen went black again. I used V.A.T.S. to kill it and when it was dead I killed the other feral ghouls. (The body of the Glowing one wasn't in my sight (he was behind me) when I killed the others so my screen was normal then.) But when I wanted to loot the dead body of the Glowing one the screen went black AGAIN. I assume this is a texture issue?