I've experienced this as well. I believe its a bug.

I'm using Sidebar Diagnostics to monitor my CPU/RAM/GPU etc.

https://github.com/ArcadeRenegade/SidebarDiagnostics/releases

Hi E_Toma,

Can you send us the project that causes this for further invastigation to support@aximmetry.com?  Please use "Zip up project" in the UE editor and send us the zip.   Also please send the xcomp file. Thank you!

The same for me. I use for test Megascans Goddess Temple. This is the project often used for tests. 

In UE4.26 I have about 40 pfs in most cluttered places. In Aximmetry-  24 fps and it says 100% GPU and about 37%CPU. 
So about 200% worse. It is in each project I test, even simplest ones.  After few minutes GPU usage raises up to 147%. Not  touching anything..
When I stop and play Aximmetry again, an play, it says about 147% again ( a little random ), but never goes back to 100%. 
This is second PC I have possibility to test it on, both clean and actual in terms of all possible upgrade and Windows 10 PRO.
There is some problem with Aximmetry, maybe some kind of buffer / cache management that fills over time?

PC built to Puget Systems spec:  Threadripper 3970X, Asus Strix TRX40,  EVGA RTX3090 FTW3, 64 GB RAM, Samsung Pro 970/980 PRO NVM.e.

 Any idea?  Aximmetry is really fantastic, but hard to make it workable by now...

@Zoltan

i send you a mail whit a Zipped project

@Zoltan

We're also having this issue, i would like to fix this problem

can i send you project and xcomp file?

Hi Pankov,

If you are still having this problem, please send the download link to sales@aximmetry.com. And we will take a look at it.

Warmest regards,

Hi Eifert,

Download link to what?

Good night!

Hi Pankov,

I meant the download link for your project. Your project will likely be bigger than what is possible to send through email. Especially if you use Unreal.

Warmest regards,