[Bug 42592] The Witcher 3 has poor performance

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

--- Comment #36 from Shmerl  ---
(In reply to Christian from comment #33)
> Enabling d3d_perf debug option shows issues with buffer uploads/transfer to
> mem etc.

Sounds like a driver bug to me. That's the benefit of using Mesa - you can
actually check what's going on. With Nvidia blob - tough luck.