[Bug 43241] New: bad performance (low fps) in Grand Theft Auto V

https://bugs.winehq.org/show_bug.cgi?id=43241

Bug ID: 43241
           Summary: bad performance (low fps) in Grand Theft Auto V
           Product: Wine
           Version: 2.11
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: -unknown
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

Created attachment 58548
  --> https://bugs.winehq.org/attachment.cgi?id=58548
default log wine-2.11

I get very poor performance in GTA V at lowest settings.

The in-game test shows an average of 3 FPS (goes as low as 2 and peak at 6).
That's about what I get when actually playing.

Enabling or disabling CSMT does not change the frame rate.

My specs are:
CPU: Intel Core i7-4930K CPU @ 3.40GHz x 12
GPU: GeForce GTX 970/PCIe/SSE2 (4Gb)
Driver: NVIDIA Driver 375.66 (current from Debian Jessie repos)
Screen: Single monitor 1280x1024 - or 3840x1024 - makes no difference.

wine-2.11 patched to workaround bug 43102 and to silence ActivateKeyboardLayout
FIXMEs is used. The issue is the same with unpatched Wine.