[Libreoffice-bugs] [Bug 140132] New: Unbearable flicker, when HDR and G-Sync is turned on (NVidia with workaround)

[bugzilla-daemon at bugs.documentfoundation.org]

https://bugs.documentfoundation.org/show_bug.cgi?id=140132

            Bug ID: 140132
           Summary: Unbearable flicker, when HDR and G-Sync is turned on
                    (NVidia with workaround)
           Product: LibreOffice
           Version: 6.4.7.2 release
          Hardware: x86-64 (AMD64)
                OS: Windows (All)
            Status: UNCONFIRMED
          Severity: minor
          Priority: medium
         Component: UI
          Assignee: libreoffice-bugs at lists.freedesktop.org
          Reporter: mcusher at gmx.de

Description:
I just received my new Monitor with G-Sync and HDR. Everything was fine, until
i opened LibreOffice. I got framedrops with unbearable flicker.

Solution/Workaround: 
-> Tools
 -> Options
  -> LibreOffice 
   -> View
    -> DISABLE "Use OpenGL for all rendering"

Steps to Reproduce:
1. Activate G-Sync in Nvidia control panel (fullscreen AND windowed)
2. Activate HDR in Windows Settings
3. (Activate OpenGL rendering in LibreOffice, if turned of)
4. Start LibreOffice (keep it active application)

Actual Results:
Monitor  shows varying framerate, screen brightness flickers

Expected Results:
No flickering, steady framerate


Reproducible: Always


User Profile Reset: No


OpenGL enabled: Yes

Additional Info:
Hardware:

GPU: Nvidia 3070
Monitor: Asus xg32vqr

Disabling OpenGL solves the problem.
Might scare LibreOffice users.

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