[Bug 51047] New: Significant performance regression in The Sims 2

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=51047

            Bug ID: 51047
           Summary: Significant performance regression in The Sims 2
           Product: Wine
           Version: 5.14
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: winex11.drv
          Assignee: wine-bugs at winehq.org
          Reporter: sashok.olen at gmail.com
                CC: zzhang at codeweavers.com
   Regression SHA1: 9905a5a81d6baf59e992c5b2a8ea92ee4054e5d6
      Distribution: ArchLinux

Hi, through regression testing I've discovered that
commit 9905a5a81d6baf59e992c5b2a8ea92ee4054e5d6
Author: Zhiyi Zhang <zzhang at codeweavers.com>
Date:   Fri Jul 24 17:23:21 2020 +0800

    winex11.drv: Add XRandR 1.4 display settings handler.

which was first included in 5.14 release, caused The Sims 2 - Ultimate
Collection from Origin (no longer available for purchase) to experience a
significant reduction in performance. For instance, in my save game, in Living
Mode, frames per second drop from around 70 in Wine 5.13 to around 5 in Wine
5.14, and in Neighborhood mode, they drop from around 140 to 40 (can't give
precise numbers due to The Sims 2 lacking any internal benchmarking tools, but
the significant difference in FPS is always there and it's very noticeable and
consistent).
Should note that this issue applies both to WineD3D and third-party DXVK D3D9
implementation (for wined3d, you need staging with this game), and that I've
previously discovered through an apitrace recording that this game seems to
call IDirect3DDevice9::GetDisplayMode very often, sometimes 100 times per draw
call, which could be related, seeing how the regression is in winex11.
As this game is no longer available for purchase, I'm willing to temporarily
lend my Origin account with this game for testing purposes. However, I think
it's also available through Internet Archive, though not sure how legal that
is.

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