I’m using 6.3.5 on Trixie currently and have only experienced a few small bugs here and there. I tend to tweak and break stuff with any OS though. I’m extremely pleased with it’s current state now and think Trixie is supposedly releasing in the next few months.
I would highly suggest trying and sticking with Debian KDE. It does all that and more. I’ve been using it for years. Stable isn’t bad, but I’ve found testing “trixie” better as it has plasma 6. I have done a fair amount of distro hopping on several different types of machines. I prefer anything with plasma 6 over just about anything. Mint is good, but cinnamon feels shackled compared to KDE. Especially with wayland and pipewire on Plasma being nice improvements over the past.
I have a projector, a nice audio system, and a built rig with AMD/AMD all running through Debian with Emby / Steam / Audacious. It’s superb and likely the finest linux experience I’ve had to date.
Having played with these A LOT, my first question is, do you want an all purpose desktop or a gaming console?
If you simply want to play games with it, I’d recommend either Steam OS or Chimera. Some would suggest Bazzite as well.
I have had better success with performance with Debian testing “trixie” with KDE than Kubuntu or Mint.
Just my observations after hours and hours of tinkering with mine. I’ve had both the Ser 5 and 6. My experience was also similar, it simply had better frame rates on Windows. But I fucking hate windows, so I choose to play games faster with less graphical rendering.
Installed Trixie on my desktop and laptop months ago. I have had zero complaints or issues with it. Plasma 6 is nice and clean. Gaming works flawlessly. It’s probably been the nicest and easiest Linux install I’ve had in years. I’ve been using Linux since 2007. And I have a bad habit of tweaking things till they break. So far nothing reportable.