Bug Report cropped screen and lag while playing steam games

[Derpy McCMuffin]

I need help with this, because I have no idea how to fix it! It records the game, but the recording is cropped into the corner of my screen. WTF?!!

 

[renamedd]

resize it

 

[Derpy McCMuffin]

how? I've looked through all of the settings and I don't see anything about the size of my screen.