@herf I tried to install those but it turns out they don't support the 2x00G series. Anyway, I used the 'clean uninstall' option this time and after restart (on whichever GPU driver version Windows provides, I didn't check) flux was working fine, but second monitor was inactive. So I installed the 19.7.5 version again and second monitor and flux work but... then I checked the Driver info and it says: AMD Radeon(TM) RX Vega 11 Graphics (20180730). I guess that's the Windows build-in driver. I don't understand why, there were no errors during installation. I tried to open the AMD app and it says that 'Radeon Settings and versions do not match' and to try to update to the latest version. Well, no thanks. I'm staying on the current version, I don't need the AMD Settings app to work anyway.