https://bugs.freedesktop.org/show_bug.cgi?id=106287
--- Comment #1 from Henrik Holst henrik.holst2@gmail.com --- I've just reverted back to the 18.0.0 files from the Padoka PPA and now Dying Light works fine without any glitches so there is definitely something in the 18.0.1 release that creates problems with Dying Light.
Also found another amdgpu user on Steam that experienced the same problem with a Fury X so this is not just me.