I have bought a new laptop acer aspire A515-41G-T4MX.
Its specs:
AMD Radeon RX-540
laptop acer aspire A515-41G-T4MX
Windows 10 64bit (It was with linux but I installed licensed windows 10 64bit)
Radeon Software Crimson Edition 17.11.1
(firstly I installed 17.10 from acer site (this driver didn't switch graphics too: arma3 warked with inegrated card but witcher3 worked with 540) and then updated to 17.11 (arma3 started to use rx-540))
NT156FHM-N41 1920x1080
Acer Aspire A515-41G Bios Version 1.03
QuadCore AMD A10-9620P
8 gb ram
Why do some games use inegrated video card instead of using descrete? For exampe, witcher 3 is working with RX-540, but stellaris and and dayz working with inegrated r5.
I even can't change it: try to switch to "high perfomance" and nothing is going on, it still uses r5. I tried to turn of r5, but game start to use cpu instead of rx-540.
Please, help me, am a little bit tired of amd, laptop with intel+nvidia works without any problems.
Well, the problem was resolved by...windows 10. I uninstalled graphics driver with DDU and was searching other advices to open "advanced settings" when windows 10 started to update (some stuff and graphics/adudio drivers), I decided to don't interrupt and...it's just working now. Until that I installed/uninstalled it for many times without any progress and it's just start to work after windows did it.
P.S. I saw some advice about reinstalling audio drivers, I think it might help, because I have some problems with audio and now it's ok.