In game fps bug

[Galallee]

hey i've encountered this bug a few times but this time i got it when i was streaming and so was wondering if theres anything you can do about it, the fps only drops inside the game not with anything else, as you can see in the clip i am typing and speaking perfectly fine but the game itself is running like a slideshow for now reason from what i can tell despite the entirety of the stream shows the game running perfectly fine with more effects etc on screen than in this clip https://clips.twitch.tv/EnjoyableLittleSkunkAllenHuhu