[Bug 53476] New: SRGP Studtio Games run slowly with Wine d2d

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=53476

Bug ID: 53476
           Summary: SRGP Studtio Games run slowly with Wine d2d
           Product: Wine
           Version: 7.14
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: d2d
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

Created attachment 72844
  --> https://bugs.winehq.org/attachment.cgi?id=72844
Log of loading an autosave and starting a battle with
WINEDEBUG=-all,+d2d,+timestamp

Games made using SRPG Studio run extremely slowly when using Wine.

The games I've tested the most are Vestaria Saga I & II, but it seems to be a
general issue for games made with SRPG Studio.

In-game performance depends heavily on what's on screen at the moment. If
there's only a few units on screen, games may run at around 30 FPS, but with
more than a dozen or so units on screen the framerate drops closer to 20 FPS.
Turning on the enemy range preview also causes a noticeable decrease in
performance.

Battles also run at a lower framerate, but it looks like there were engine
changes between Vestaria Saga I > II such that battles run a bit more smoothly
in II.

I was able to run Vestaria Saga I & II inside a Windows VM at what I think is
~60 FPS. But I observed a performance decrease similar to non-native when I
added Wine's d2d1.dll to the game's folder inside the VM.