I have a very slow response when switching tabs on my desktop. It’s a Fedora 40 KDE version, with KDE plasma 6.1.2.
The problem manifests itself when I alt-tab. For a quick task-switch, (brief alt-tab), there’s no problems, everything is quite fast. But when I actually want to see all my windows, it’s annoyingly slow - it takes between one and two seconds. And also when I release the alt-tab, the same happens, my entire system is frozen for about the same amount of time. The same happens with Alt-` (switch windows of the same app).
I’m 99% certain this is not my computer’s fault - I have Ryzen 9 7900x with 64GB of RAM, and an AMD Radeon RX6700XT card - these should be eating the stuff. And it generally does, just the tiny things like this one are sometimes glitchy.
Changing the Visualisation (in Task Switcher settings) does not solve the problem, even downloading new task switchers.
The searches online had lead me nowhere - switching themes (from Breeze or Fedora defaults) does nothing to help. I’ve read online things like adding TabBox → DelayTime to config (there’s no place in the UI to change this), but it also does nothing.
What could be the problem? Where could I be looking into it? How could I go about gathering more information, at least?
Why is my system freezing on the task switcher action?
I also had this issue, csaba solution fixed it, although this seems like a bug that should be fixed, I was getting the huge stutters on a ryzen 9 7900X with 32gb total ram, 10g+ ram available and cpu only under 10% load when alt tabbing so there seems to be something wrong.