[Bug 47483] New: Significant performance regression in Overwatch due to loader-KeyboardLayouts patch

[wine-bugs at winehq.org]

https://bugs.winehq.org/show_bug.cgi?id=47483

            Bug ID: 47483
           Summary: Significant performance regression in Overwatch due to
                    loader-KeyboardLayouts patch
           Product: Wine-staging
           Version: 4.12.1
          Hardware: x86
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: -unknown
          Assignee: wine-bugs at winehq.org
          Reporter: sashok.olen at gmail.com
                CC: leslie_alistair at hotmail.com, z.figura12 at gmail.com
      Distribution: ---

Seems like this patch creates a lot of entries in system.reg (around 600 lines)
that all look pretty much like this: 
[System\\CurrentControlSet\\Control\\Keyboard Layouts\\000b0c00] 1562521578
6843440
#time=1d534ebe1c1fd30
This somehow??? results in 40% drop of FPS in my test app/game, Overwatch
(could be similar to this? https://bugs.winehq.org/show_bug.cgi?id=47431)
Reverting the patch fixes it but only if I also remove all the spammy entries
from the system.reg in the prefix. Leaving them causes even older versions Wine
versions to experience the performance drop.

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