[Bug 45989] New: The Witcher 3 flickers horribly and has artifacts

https://bugs.winehq.org/show_bug.cgi?id=45989

Bug ID: 45989
           Summary: The Witcher 3 flickers horribly and has artifacts
           Product: Wine
           Version: 3.18
          Hardware: x86
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: -unknown
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: Gentoo

See the attached video. Basically, certain areas of the screen (e.g. most of
Geralt, the outside sky, certain interior walls) flicker very badly. Also,
there is a grassy-looking wall in the middle of the room.

I am using a Northern Islands class card, so Vulkan is not supported. I am
using Mesa 18.2.2.

Apologies for the potato quality recording; I'm using sway at the moment and
video recording isn't properly supported. I did try TW3 on X though and it had
the same results.