Sudden FPS drops on all games. From 200fps to 10

Done another test run on pubg. It seems that frame rate directly correlates with the heat of the GPU or I could just be reading too much into it. Need to run it for longer.
 
Same problem with this PSU.

What I have noticed is a direct correlation with power usage on HWMonitor and the fps I am getting. It's sticking at 25-30 percent power and when it ramps to 100% I start to get the frames I am used to.
 
Tried the 1080 on a different computer now.

It seems to be running perfectly fine.

I've now put a 1060 into my machine and a different power supply and getting the same issues.

I find it hard to believe that this power supply (550w Superflower) can't power a 1060 or a 1080.

The power usage according to HWmonitor is 14 percent even when on intensive GPU games.

So I'm still no further to finding out what on earth is going wrong.
 
I've not seen it mentioned but maybe it is to do with gpu usage fluctuation caused by the gpu power management setting that down clocks the gpu cores if the load is not high enough. Go into nvidia control panel and in manage 3d settings, set power management mode to prefer max performance. Probably not it but it's worth a try.
 
I read another thread on here with someone struggling with FPS.

Think in the end it was a power saving feature in the Nvidea control panel...make sure all settings are running full.
 
I forgot to tell you all what happened.

So the answer was in front of my face and I mentioned in this thread.

The CPU was constantly locked at 800mhz - hence the massive drops in performance.

The culprit was: Intel Thermal Monitor

Well, the actual culprit was my cooler was too tight on the CPU so it was tripping out the thermal monitor.

When this happens, it forces the cpu down to 800mhz.

I disabled it at first and then rejigged my CPU heatsink.

All fine now and in fact better than ever. Which makes a hell of a lot of sense now because I must have been having a minor performance hits thanks to the throttling.

Hope this thread helps to contribute to someone else sorting out their own PC in the future.
 
Whilst it must have been a fantastic relief, I bet at the same time almost very frustrating on what was causing the issue!

I always thought coolers were designed in such a way you couldn't over tighten, all the ones I have used have anyway.
 
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