[Bug 52236] New: Performance regression in Eden's Ritter - Chapter 2 (demo)

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=52236

            Bug ID: 52236
           Summary: Performance regression in Eden's Ritter - Chapter 2
                    (demo)
           Product: Wine
           Version: 7.0-rc2
          Hardware: x86-64
               URL: https://web.archive.org/web/20191215150009if_/http://s
                    ample9.dmm.co.jp/digital/pcgame/waffle_0102/waffle_010
                    2t.zip
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: directx-d3d
          Assignee: wine-bugs at winehq.org
          Reporter: sagawa.aki+winebugs at gmail.com
   Regression SHA1: 4261369e5d8f1d71e8d207474751585fe9f90cc5
      Distribution: Ubuntu

Eden's Ritter - Chapter 2[1] is a NSFW visual novel released by Waffle in
Japan. I started its trial version with wine 6.0-rc2, and noticed its
performance was poorer than before.
My git bisecting shows commit 4261369e5d8[2] causes the issue.

[1] https://vndb.org/v24582
[2]
https://source.winehq.org/git/wine.git/commit/4261369e5d8f1d71e8d207474751585fe9f90cc5

After the commit, window update is too slow to play the game. My desktop
environment is also sometimes unresponsive. However, WINEDEBUG=fps shows very
high value, approx 120.

Before the commit, I can play the game without this issue. WINEDEBUG=fps is
nearly 60fps.

This issue might be a duplicate of Bug 51848, but the FPS is still low.

SHA1(waffle_0102t.zip) = 1e6345f82f1ed772163005ad63c5ca778ba9128e

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