Lagging in game while watching streams

Idk why but when i play games and im listening to streams in the background i have horrible lag…

Computer specs:
Processor:AMD FX™-4300 Quad-Core 3.80 GHz
Video Card: Nvidia Gtx 550ti

Idk why im lagging so bad please help.

You are writing this in the Twitch developers forum, please refer to to get support for general issues regarding Twitch.

it’s not letting me ask a question?

Please see this link: