Need help explaining why FPS drops when I'm streaming with two monitors enabled but not with one.

iboycott

Honorable
Dec 21, 2013
111
0
10,680
So I've been trying to stream and my fps has been dropping and I couldn't figure out why. I decided to try to disable my 2nd monitor and now my streaming doesn't drop my in game frames. Could it be my video card?

Motherboard: ASRock Extreme3 R2.0
CPU: AMD 8 core FX 8320
Case: NZXT Phantom 410
Video: Asus GTX 660
Power: XFX Pro 750W
Memory: G.Skill Sniper Series 8GB (2 x 4) 240-Pin