Are there any drivers that work for the R9 270x and Windows 10 x64?
I've cleaned and installed ( tried ):
16.5.3
16.3.2
15.16.x
even used the auto-detect which found 8xxx series card and tried those drivers.
All of them constantly crash.
Have you tried removing drivers with Display Driver Uninstaller? If that didn't work, have you tried removing it manually (Best way to remove GPU drivers?)