6900xt,3900x, destroyed by (1024x700) x60 client

[EXq]

PC Components:

-Alim 850W Corsair HX850 ATX Modulare (80+Plus Platinum)
-Ram DIMM DDR4 32GB Corsair 3200 C16 Ven K2
-MSI X570-A PRO Scheda Madre, Socket AMD AM4, DDR4, M.2, USB 3.2 Gen 2, HDMI, ATX
-SSD 500GB Samsung Pro 980 M.2
-Cpu AMD Ryzen 9 3900X AM4 12x4,6GHz 12-Core 64MB Ca retail
-AMD Radeon™ RX 6900 XT Graphics


The first image is of Software Radeon before the situation exposed in task manager later.
The task manager data below tends to make no sense. -GPU(Driver 21.5.1)-
Everything is completely unstable, it continues to freeze and to be slowed down.


Opening more than one window of this MMORPG, at 1024x700 resolution,
I have very strange functioning of my GPU and CPU.
These facts happen after the vram begins to become saturated.
Before the vram becomes saturated everything works correctly.
Interesting fact is that a 1024x700 client in the old pc with a "gtx 460 4g" uses 100mb of vram.
In this pc with the 6900xt always with a client at 1024x700,it uses about 450mb of vram, same monitor.


I have completely cleaned everything and reinstalled everything, even updated bios, chipset,
tried all the drivers versions for the 6900xt,
various settings on the AMD Software Radeon app but I could not solve.

What can all this be due to?