[Bug 56799] JUCE based VST plugins (eg. MJUCjr,Room Reverb,Tal Reverb) needs WaitForVBlank() to refresh its window

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=56799

--- Comment #9 from Xj  ---
Seems that this issue is so-called "optimization" in JUCE framework. There's
more plugins affected. I found out those:
- all klanghelm (MJUC jr., DC1A, IVGI and probably others)
- ElephantDSP Room Reverb
- TAL (TAL Reverb 4, TAL Chorus LX)

I can confirm that this patch (with sleep in it) is solving this issue.