I've seen mention of this on the nexus mod page posts, but I haven't seen it mentioned here, maybe because it says all the search terms are too small/common. Once I've build Mansfield's office in How to HQ, a blue wall/void appears near the back wall and annihilates my frames if I look at it. Sometimes it can also be seen all the way across the ground floor if you look at his office from across the balcony. It seems to be a specific point or something that starts it because I can walk in his office and look in different directions and have it instantly disappear. It kills my frames but if I look away from it or walk through it, it goes away and my frames instantly go back to normal. 2.1.3a says its supposed to fix a cell crash, but I don't know if this is the same thing. So far it isn't game breaking, but its really annoying.