Can you try the attached registry file, Disable Hardware Acceleration. This looks like it might be a graphics driver issue, this patch tells your machine to not use the video hardware for MailWasher rendering.

Also attached is the reversal patch.

Run the disable, answer Yes to import into registry, reboot machine, see how MW performs.


Quelle: https://forum.firetrust.com/viewtopic.php?f=50&t=44488&p=149387&hilit=windows+11#p149387