[Bug 49233] New: World of Wacraft (WoW) slow fps with the dx11 modern renderer

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=49233

Bug ID: 49233
           Summary: World of Wacraft (WoW) slow fps with the dx11 modern
                    renderer
           Product: Wine
           Version: 5.9
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: -unknown
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

Created attachment 67238
  --> https://bugs.winehq.org/attachment.cgi?id=67238
Output with the legacy renderer

Since 8.1.5 the game has 3 renderers dx11, dx11 legacy and a modern dx12
renderer.

With my amd rx480 it is impossible to use the dx11 modern multi-threaded
renderer to play. It results in single digit fps.
The single threaded legacy renderer works.

Based on comparing the attached logfiles the only obvious difference is 
fixme:d3d11:d3d11_device_CreateDeferredContext1 iface 0000000013850120, flags
0, context 000000014293F108 stub!