http://bugs.winehq.org/show_bug.cgi?id=4308
Summary: Heroes of Might & Magic 4 - battle scene is slow unless mouse is moving constantly Product: Wine Version: 0.9.5. Platform: PC-x86-64 OS/Version: Linux Status: UNCONFIRMED Severity: normal Priority: P2 Component: wine-directx AssignedTo: wine-bugs@winehq.org ReportedBy: martyspamtrap@comcast.net
In a battle scene in HOMM4, animation is very slow, and CPU use is very *low* unless the user moves the mouse around in continuous motion. While the user is moving the mouse, animation occurs at full normal speed and CPU use is normal.
I suspect that since the mouse is a software drawn mouse cursor, it forces a screen update when the mouse is moved. The normal code responsible for maintaining the frame rate seems to be in error, throttling the frame rate back way further than necessary, and moving the mouse overrides this because it forces the update.
The same effect is noticed when on the video when the battle is over, where the battle's stats are shown.
Please let me know if I can do anything to provide more useful information on the subject.