Computer was running all games perfectly; suddenly dropped to 40 w audio distortion

[mattheww]

Computer was running everything flawlessly. Mario Kart Wii was running at or around 60 FPS. Now everything is laggy, even GCN games. Sometimes during the gameplay it spikes up to 60, stays for a few seconds then drops back down to 40 or lower with severe audio distortion. Help?

[Craftyawesome]

Made sure your computer is in performance mode. Full specs would help though.

[mattheww]

Thank you! Preformance mode runs it amazingly! Gameplay is flawless.