https://bugs.winehq.org/show_bug.cgi?id=46148
--- Comment #3 from Zebediah Figura z.figura12@gmail.com --- Well, it'd be nice to know if this is a Staging bug or a regression in upstream Wine. As far as I am aware WoW needs several Staging patches to run, but if these are known then the most helpful thing to do would be to compile Staging with only those patches, and check if the regression is still present.
Unless of course there is any intuition from the D3D developers as to what might have changed.
(In reply to Kevin Grittner from comment #2)
Also, performance in WoW (the only use I make of Wine) is far worse after updating to Wine 3.20 (Staging) from the previous Wine version. This is especially noticeable on the i7 with the Ivybridge graphics, where it can take many seconds for a keystroke or mouse movement to have any visible affect.
I guess this should be filed as a separate bug, unless this seems likely to be related.