Corsair H80i causing CPU overheating?

[Dead-Pon3]

So i've dug out my account in the need of some advice.

A few weeks ago I started experiencing lag spikes in GTA V, something i had never had before. After chasing what i thought was a software issue i put it down to my CPU overheating, so i cranked to fans up to max and the overheating stopped (I have always had the fans at 50% roughly even when gaming so i though this was a bit weird)

Fast forward to today and i have the H80i working flat out and i keep getting lag spikes in Fallout 4, something i can only put down to the overheating issue again. I have had this AIO 3 1/2 years so is it possible that its starting to fail and will need replacing or could it be something else before i start throwing money at a new cooler i don't need. I don't want to spend much to fix this as i plan to upgrade soon but my PC is becoming unusable for gaming at this rate.

Specs:

AMD FX-8350

ASRock extreme 3 970

ASUS CUII GTX 770

Corsair 300R

 

[Stevoisboss]

AIO's usually wear out over time. What are your temps? Have you tried overclocking it since you first got it?

[Matt100HP]

Doesn't the H80i have a 5 year warranty? Even if it is dying (which it does sound like it might be) can't you just send it off to Corsair for repair/replacement? 

[Mr.Meerkat]

What are the temps?