https://bugs.winehq.org/show_bug.cgi?id=43246
--- Comment #2 from Henri Verbeet hverbeet@gmail.com --- Created attachment 58717 --> https://bugs.winehq.org/attachment.cgi?id=58717 hack
The issue seems to be that the application uses buffers without D3DUSAGE_DYNAMIC as if they're dynamic. The attached hack fixes the performance for me, but doesn't strike me as correct.