Occt weird test results

[xMishax]

Hello. Today Ive decided to test my system for stability with occt.

System specs are in my profile.

So when I tested cpu everything was fine, temps were okay, clocl also, everything was stable, no errors. Then I tested gpu 3d - everything was stable aswell, no errors so far. Weird thing happened when I tried to test psu ( occt loads every component to the max ) and Ive noticed that gpu usages were jumping back n forth from 100 to 40 to 0 and back to 100, clocks of gpu were not stable aswell. Same thing happens when gaming and this instability causes lags from time to time. What might cause this? Gpu itself seems to be ok, cpu aswell. Could it be mobo or psu?

[Grrizz]

I'm not familiar with the normal operation of that test but unless you know otherwise that might very well be normal, spiking/varying loads will be far more taxing on a PSU than constant loads even if its a heavy constant load, though I wouldn't expect to see that in a game. The GPU clocks will adjust based on the load applied to it.

[xMishax]

So what you say this test does the drops on purpose to test the psu. That sounds logic.