There is plenty of discussion about this elsewhere on the net. It seems that it is an Xorg problem.
Some workarounds are described, e.g., here: https://www.reddit.com/r/kde/comments/qqi9z8/updated_kde_and_suddenly_everything_is_huge/
There is plenty of discussion about this elsewhere on the net. It seems that it is an Xorg problem.
Some workarounds are described, e.g., here: https://www.reddit.com/r/kde/comments/qqi9z8/updated_kde_and_suddenly_everything_is_huge/