[Bug 39055] New: Heroes of Might and Magic V random fps drop

https://bugs.winehq.org/show_bug.cgi?id=39055

Bug ID: 39055
           Summary: Heroes of Might and Magic V random fps drop
           Product: Wine
           Version: unspecified
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: -unknown
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

While playing HoMM V (original, Hammers of Fate, Tribes of the East, GOG
bundle), occasionally (usually after camera movement, rotation, zoom), the
performance drops severely, to an unplayable level. Resetting the game's
graphics settings (e.g. by changing any video setting - quality, AA, etc. - in
options and clicking "Apply", or by using the "gfx_recreate" console command)
returns the performance back to normal, until the next drop occurs.

Tested on Gentoo, wine 1.7.47 (there's no ebuild for 1.7.48 in Gentoo yet),
wine-staging 1.7.47, wine 1.7.21 (since that one is reported as working on
AppDB), behaviour is the same. Used two nVidia GPUs: the GTS450 and GTX560,
again, same results.