[Bug 17001] New: guitar pro 5.2 is sluggish and unstable

http://bugs.winehq.org/show_bug.cgi?id=17001

Summary: guitar pro 5.2 is sluggish and unstable
           Product: Wine
           Version: 1.1.13
          Platform: PC-x86-64
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: -unknown
        AssignedTo: [e-mail]
        ReportedBy: [e-mail]

Guitar Pro 5.2, a popular scorewriter, used to work perfectly a handful of
releases ago, but has been regressing for a while. Here's what happens in
1.1.13:

1. The window redraws slowly (takes noticeably longer to draw when switching
from another application; windows dragged on top of it leave traces).

2. After ending song playback, there is a wait of about a minute before the
program becomes responsive again, accompanied by the following messages in the
console:

fixme:win:LockWindowUpdate (0x10020), partial stub!
fixme:win:LockWindowUpdate ((nil)), partial stub!

When testing an instrument or when the option to hear notes as you input them
is on, there is no such lag.

3. When Guitar Pro crashes because of Wine, a lot of markers (grey dotted lines
and labels) are seen on the page. This is some sort of debug feature used by
the authors, which is somehow triggered by Wine.