[Bug 23993] Batman: Arkham Asylum demo slow frame rate

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=23993

--- Comment #13 from Patrick McMunn <doctorwhoguy at gmail.com> ---
I did a little digging and testing. I found a Wine plugin called d9vk which is
now part of a more comprehensive plugin called dxvk which is a Directx 9/10/11
-> Vulkan translation layer for Wine. Since the game doesn't have a built-in
FPS meter, this is purely subjective, but the performance I now see with this
game is much more comparable to native Windows performance. If it's not
completely on par, it is very close. And from what I've read online, the
problem seems to lie in the DX9 shader compiler functionality of Wine. So this
isn't so much a game-specific bug as a general deficiency in Wine's DX9
compatibility. Until this compatibility improves, I'd recommend the dxvk plugin
for anyone dealing with performance problems with this game under Wine.

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