https://bugs.kde.org/show_bug.cgi?id=476326

Florian Reiser <reise...@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|REPORTED                    |RESOLVED
         Resolution|---                         |WORKSFORME

--- Comment #2 from Florian Reiser <reise...@gmail.com> ---
Hi,

I've found a workaround for this bug. Just go to Krita Menu -> Settings ->
Configure Krita -> Display -> Canvas Acceleration

The Canvas Acceleration must be switched on. If you use "Auto" on Windows, most
probably your system has chosen Direct3D. On some systems, this could lower the
performance. See also
https://docs.krita.org/en/reference_manual/preferences/display_settings.html:

> ANGLE Direct3D (Windows Only)
> Krita will use the ANGLE compatibility layer to convert the OpenGL calls to 
> Direct3D calls. 
> Whether this works better than regular OpenGL depends on the graphics drivers 
> of the computer.

But the most effective setting to workaround this bug is to reduce the quality
of the Scaling Mode. On my system, it was already enough to switch the value
from "High Quality Filtering" to "Trilinear Filtering". But reduce it even
more, if you still encounter the bug.

Florian

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