+++ This bug was initially created as a clone of Bug #452117 +++ (new reporter here - I got the exact same behavior as the O.P. on bug 452117 touchpad moves the pointer smoothly around, wireless mouse will behave exactly as described bellow, to the point of disrupting workflow) SUMMARY STEPS TO REPRODUCE 1. 2. 3. OBSERVED RESULT EXPECTED RESULT SOFTWARE/OS VERSIONS Linux/KDE Plasma: KDE Plasma Version: 6.2.5 KDE Frameworks Version: Qt Version: ADDITIONAL INFORMATION SUMMARY *** There is cursor input lag *** STEPS TO REPRODUCE 1. In the compositor settings, switch from lowest latency to higher one 2. see that mouse lag changes You can even try to saturate the gpu use; the mouse will start to stutter too. Under Xorg, i've regular hardware mouse cursor. OBSERVED RESULT EXPECTED RESULT SOFTWARE/OS VERSIONS Windows: macOS: Linux/KDE Plasma: (available in About System) KDE Plasma Version: KDE Frameworks Version: Qt Version: ADDITIONAL INFORMATION
Thank you for the bug report! Please note that Plasma 6.2.5 will not be supported for much longer by KDE; supported versions are 5.27., and 6.3 or newer. Please upgrade to the latest version as soon as your distribution makes it available to you. Plasma is a fast-moving project, and bugs in one version are often fixed in the next one.
Wait - looks like it is a hardware issue on my USB-C -> USB-A adapter (and therefore multiple mouses misbehaving, in the same week I changed computers for one with a newer system and Plasma 6.2) I will wait until the end of the day before closing, though - it is some quite erratic behavior- (in other news, just now I perceived the "cloned" bug was cloned as "fixed" despite re-asking questions) I apologise for the noise.
No worries!