Pc overheating, lag?

KaneMac

Enthusiast
So i have had this PC for 3 years and never had issues with overheating. But now I think I am, i used a software (no longer working) so I have no idea of he specific temps but PC seems louder under certain games.

I have an i53570k OC (couple of GHz pre OC)
Watercooling corsair
GTX Titan
Sabertooth motherboard
Stormtrooper case

I have noticed my PC is louder, and after 10 mins on arma 3 multiplayer (low population) on higher graphics (never had issues) its Lags when i move m mouse, sound lad, and my mouse lags on desktop etc.
I have also made sure there is not too much build up of dust to the best I can
would it be recommended to send my PC to PC specialist (if they offer the service) or someone else to see and find what the issue is and fix/ add new parts if needed?
 
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