Display briefly turns off and text becomes unreadable in KDE

[GerbilloLone]

EDIT: this issue was caused by the Prefer color accuracy setting.

I'm using KDE Plasma 6.3.4 (~amd64) and this issue does not show up in the TTY, in Ubuntu 24.04 LTS or in Windows 11.

After what seems like a random time after starting Plasma (using "dbus-run-session startplasma-wayland") my screen gets some strange white lines for a fraction of a second and, after a while, it turns off and on again (as if I unplugged the DisplayPort cable and plugged it back in).
When this happens, all text on screen looks like it has no antialiasing applied anymore, but the KDE font settings still show antialiasing should be active.

Having my monitor turn off randomly is getting really frustrating.[/b]