Howdy! I’m new to both GNU/Linux and OpenSUSE as a whole. You’re talking to a noob here.
Hardware:
Thinkpad P14s
CPU: AMD Ryzen™ 7 PRO 8840HS Processor (3.30 GHz up to 5.10 GHz)
GPU: Integrated AMD Radeon™ 780M
Desktop environment: KDE Plasma 6 on Wayland
It’s plenty fast. But…
My desktop experience feels very sluggish. Slow, almost variable framerate. Sometimes smooth, sometimes choppy. 1080P video playback in both VLC and Haruna is very choppy. Yes, I have installed the H.264 codec pack.
The most interesting thing is on the login screen:
When I enter my password sometimes the field shows nothing until I move the mouse. What could cause all this?
BUT WAIT, IT GETS WEIRDER!
When attempting to get a video of this I discovered when the mouse is in the upper left corner the screen updates normally. The same is true of video playback. When watching something in VLC the video is smoother when the mouse is in the top left corner.
Is it dual boot? Or just opensuse?, How old is this machine?
Stock ssd? if not what is being used for starage?
My first thought is a hardware issue. Have you tried unplugging and or disabling hardware. to see if the response times improves?
Easiest to do is unplug the mouse, also try disabling trackpoint, and touch pad, one by one and see if there is any improvement.