I got a BSP bug straight from start... 180deg at first room exit side hidding almost everthing, and most of pos+angle in next room.
W7 x64 GTX1060GT, W10 GTX750TI.
First room (normal view)
Same as prev. screenshot but ~3deg righter...
Some point at second room
Any points have some yaw range as normal view (most of time 180deg range, but ~30deg at room corner)
P.S.: Warrior + BSP bug and i got last shot at stairs, almost everething destroyed with wrench-throwing (turret with bild hit&run throwing around corner)