This is a kinda off-topic recommendation, but might I suggest you try out KDE Plasma 6 in a KDE Neon live environment and test out the improved VRR and such; reporting any bugs you may find.
It’d be very helpful to making sure KDE Plasma 6 is as stable as possible on launch for everyone.
Not a lot of testers have a VRR monitor to test, and various hardware configuration can yield weird bugs not fond on other systems.
Thanks.