...is there a way that this can be done just like in overdriveNTool(much more practical) where you just autostart profiles with .bat for each of gpus(no need for reg powertable stuff)
example of input text in .bat
OverdriveNTool.exe -p0myProfile -p1"Profile 2"
In this example application starts without gui, then sets "myProfile" to GPU with id=0 and "Profile 2" to GPU with id=1 and then exit.
I would check out vegaminingguides for this and googling it. It used to work for the Vega FE and I still have a folder with that configuaration that I can show here. But you may need to dig in more on your own.
You could try mixing this in the same .bat as applying memtweak, but I'm the wrong guy to ask about this. You may already know all this..
What I had in one config.
cd command...
OverdriveNTool.exe -p1Default -p2Default -p3Default -p4Default -p5Default
cd to miner location
start.bat