Hi,
The second seems to be related to this(affects any GPU and any driver):
https://bugs.kde.org/show_bug.cgi?id=455526
The first one, is very hard for me to reproduce, it barely occurs, I have seen the mouse sometimes leave in the middle for a second, not as excessive in your video. Perhaps it’s best to be reported on KDE’s bug report, not sure?
2023-02-11 21-53-26.mkv (3.5 MB)
Operating System: EndeavourOS
KDE Plasma Version: 5.26.5
KDE Frameworks Version: 5.102.0
Qt Version: 5.15.8
Kernel Version: 6.1.11-x64v3-xanmod1 (64-bit)
Graphics Platform: Wayland
Processors: 16 × AMD Ryzen 7 5800X3D 8-Core Processor
Memory: 31,3 GiB of RAM
Graphics Processor: NVIDIA GeForce RTX 3090/PCIe/SSE2