Reduced frame rate after talking to Ganto Imness

https://masseffect.fandom.com/wiki/Ganto_Imness

After talking to him, and then going to kill the mindless salarians, the Frame rate on the vermire mission drops majorly to like 6-8 frames a minute.

But when you get to the door to talk to Rana Thanopsus, it seems to increace to normal.