Please help me, tell me why this happens:

Everytime when i play games to reach 104 TH/s after reaching it. My Power it goes to Red Color and Drops to 95 TH/s. After that again i'm trying to get it to 104 TH/s and after that it drops again to 95, wtf???

please help

For now i'm stuck on 96 TH/s and i'm afraid to reach more. Tell me what to do. Why it is going down??