[Plasma 6.1] Blur effect is causing slowness for mouse cursor movement and animations

Is there any hack how to replace the built-in blur effect with just a solid opaque color?

Because blur effect is causing slowness for mouse movement and animations on every app/widget where it’s used.

Disabling blur effect make navigating desktop/launcher/widgets much faster but breaks many components of Plasma where blurred parts become transparent, especially in notifications, tasks previews, and many apps like Audiotube.

Not yet, sorry.

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KWIN_DRM_DISABLE_TRIPLE_BUFFERING=1 to /etc/environment worked for me, the performance improved a lot, and I can use ICC and window blurring at the same time.