I had some mild / serious screen and window tearing problems when moving windows, scrolling through the browser and the general KDE Plasma UI could be a bit laggy. The problem was reduced if I switched my rendering backend from OpenGL 2.0((Hardware rendering – the default) to Xrender (Software rendering).
The system is a work laptop – a Thinkpad E550-. It comes with an Intel Broadwell Chip. Running
lspci -c video spit out this following: Read more