You should always run MemTest86 from USB when you build a new PC to make sure your RAM is O.K.
Bad RAM can cause all sorts of problems including corrupted Windows 10 OS.
Karhu RAM Test is the most useful to run when the Windows OS and the GPU is running a game.
It can test a large memory space and will detect errors caused by the GPU running as well.
RE: DX11.. Is there some kind of tweaks or so that can give me better performance with DX11 too?
The game developers can carefully produce code that runs well on AMD cards in DX11
Mostly for the blackscreen issue.
I have seen plenty of issues with freesync across multiple monitors causing graphical glitches and blackscreens when enabled particularly on systems that are using monitors that aren't running at a refresh rate that is a multiple of 60.
Yeah I already make sure it is turned off because it feels not good to me to have it enabled. Its not really "smooth" to me like other people say.
I mostly stick with Freesync+Vsync and sometimes playing with additional FRTC -3 FPS to displays hz. But mostly im totally fine with vsync only.
Did a reinstall now. Same behaviour.
"Windows encountered a problem installing the drivers for your device"
"Windows has stopped this devise because is has reported problems. (Code 43)"
But again after a reboot:
In device manager is the drivers date "11.07.2020" and version "27.20.2001.9003". No yellow warning symbols or something.
In Adrenaline under system tab it shows "20.7.2" and driver paket version is:
Searching again in device manager for new drivers:
"The best drivers for your device are already isntalled"
I have not seen that error when I install on GCN GPUs from RX Vega 64 Liquid down to HD7970.
I did not see that error on RX5700XT with Adrenalin 2019 19.12.1 + 20.5.2 drivers.
It might just be spme temporary error happening during install, but I think it would be better if you did not see it.
This seems to say if the error is gone after reboot then you should be OK:
mhm yeah. seems strange. specially because it looks like everything works.
maybe I should give it a try and install the actual recommended 20.4.2 instead of the optional 20.7.2.
If what you have is working fine - Adrenalin 2019 19.12.1 GUI/UI + 20.7.2 I think you should leave it at that.
I would check MemTest86 results next.
I booted now from USB to run MemTest86 and got 0 Errors in 50 minutes. Than I had to cancel the test because I needed the computer in this moment. ^^
Than I did the driver installation again like you said but used the 20.4.2 driver. Same behaviour but as I installed the 20.7.2 after that, he said that it was successful. Very strange. :-D
Will test now while playing some games.