https://bugs.kde.org/show_bug.cgi?id=386846
--- Comment #18 from Vova Mshanetskiy <vovams...@gmail.com> --- I have reproduced the issue on my home PC which, i thought, was not affected. I just started qmlscene and plasmashell with QSG_RENDER_LOOP=basic (my home PC uses threaded rendering by default). Both apps demonstrate the same behavior as on my work PC, on which i experienced the issue before. The CPU usage (while not animating), however, is much lower than on my work PC: it's around 1-2% for qmlscene and 2-3% for plasmashell. When plasmashell is started as usual (i.e. with threaded rendering), it's CPU usage is 0-1% here. I have made a video demonstrating the issue. It is recorded with KWin effect which highlights redraws enabled and with mouse clicks highlighting. The qmlscene window on the left uses threaded rendering, and the one on the right uses basic rendering. https://drive.google.com/open?id=1U-B70mKQLIwbuT7q9xBqo81gLAi8p8Q6 (I changed colors from red/blue to green/blue for better visibility.) Also, i noticed that System Settings app is also affected on my home PC even without setting QSG_RENDER_LOOP (see the last paragraph of https://bugs.kde.org/show_bug.cgi?id=381000#c141 ). This may be because of some different issue though. -- You are receiving this mail because: You are watching all bug changes.
