https://bugs.winehq.org/show_bug.cgi?id=42347
--- Comment #9 from Shmerl shtetldik@gmail.com --- I think it can be probably closed. The buffer pool patch is found here:
https://github.com/wine-compholio/wine-staging/blob/master/patches/wined3d-b...
It improves performance. See bug #42592.