I had the same behavior in 4.2.4 and in 4.3.0. I thought at first that it might be cause by the Wobbly animation applied to the windows during resizing, but I disabled applying Wobbly animation to window when resizing and still doesn't help.


I always get full 60fps when I use KDE4, but when I try to resize any window, framerate lowers considerably to around 27-30FPS and I see huge CPU usage increase on both of my CPU's cores (as measured by my CPU plasmoid). It immesiately goes back to normal when I stop resizing.

Which graphic card and driver? Also see http://userbase.kde.org/GPU-Performance ... _is_choppy

Nvidia 8800GTS 512MB driver 185.18.31

PS.: Neither skipping ARGB visuals nor initialpixmapplacement=2 help.

PPS.: This happens on ALL windows, krunner as well.

PPPS.: I see the newest driver is 185.18.36 on nvidia.com, I might try to install it, but I am a little unsure if installing apps designed for generic linux and all distros is safe. I always use apps from my distro's repo (Arch kdemod)

PPPPS.: 18.31 is newest stable release in my repo, but I've got 190.25-1 version as a beta in Arch's AUR, I can try that. (as a last resort)

PPPPPS.: CPU load cranks up a lot during resize even with compositing suspended, but framerate is definitely higher compared to compositing on.

Alright, I'll install the beta drivers. Just tell me how to do this. I suppose I need to login into text mode, remove nvidia drivers from there, and then install nvidia-beta driver from text mode? Should it be working after reboot?

PS.: Upgraded the drivers to 190.25 using the method I come up with. Worked fine after reboot. But still no change. CPU is still overloaded during resize.