[Bug 42592] New: The Witcher 3 has poor performance

https://bugs.winehq.org/show_bug.cgi?id=42592

Bug ID: 42592
           Summary: The Witcher 3 has poor performance
           Product: Wine
           Version: 2.3
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: -unknown
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

Created attachment 57528
  --> https://bugs.winehq.org/attachment.cgi?id=57528
The Witcher 3 with GALLIUM_HUD, CSMT on.

I tested latest TW3 in Wine 2.3 with staging patches applied (built from
source).

See the attached screenshot for results with low graphics settings.

Hardware:
CPU: Intel Core i7 4770.
RAM: 16GB.
GPU: AMD RX480 (4GB VRAM), Mesa 17.1.0-devel (git-4dc42ae792).
Resolution: 1920x1200.

Resulting is pretty bad (6fps inside the game). Not sure if it's specific to
Mesa or not. Anyone with Nvidia blob, feel free to post your benchmarks to
compare. If it's Mesa specific, I can open a Mesa bug too.