Sooo.. Stug + Hall Of Mirrors

[Avantria]

The colors.... but seriously it drops fps like crazy 6-7blobs every shot x 20 per clip, screen lights up and fps goes dark, not sure how to bring about fixing that but i tend to play alone because i don't want to kill other's fps (i know i can use another weapon or no use HoM but i need pistol exp as i'm just starting to lvl Stug and that gets tons of kills super fast) in short, just wondering if DE knows of the horrid fps drops it gives?