Thanks for the reply,
I'm currently downloading the 18.5.1 and see if it helps by detecting the right driver.
Although I got my GPU to be detected in-game by changing power options. What struggles me is that the driver should be R7 M445 which is noted in my configuration ( I have Dell Inspiron 15 5567 ), but Windows and Radeon Software both recognize it as R7 M440.
OS version is 10.0.17134 Build 17134.
Edit: Having the GPU running well, and reading this discussion it seems that the correct driver is installed just labeled differently, so it can be ignored.