Created attachment 173457 [details] bug reproduction SUMMARY After enabling any ICC color profile (imported or "Internal" if there's one), the `kwin_wayland` process completely takes over my "Render/3D" budget when any cursor interaction/compositing happens (moving the mouse, interacting with Plasma, interacting with windows etc.) It doesn't affect FPS games where the cursor is captured (tested with ULTRAKILL on Proton) or GPU screen recording. STEPS TO REPRODUCE 1. Open Screen settings 2. Make sure "Color Profile" field is set to "None" 3. Select the "Internal" option or import a color profile on the "ICC Profile" option 4. Apply changes OBSERVED RESULT - Some colors change and the blur effect is noticeably different (more transparent and with more contrast) - Desktop performance will be severely impacted EXPECTED RESULT There shouldn't be any (?) performance loss after enabling a color profile. SOFTWARE/OS VERSIONS Linux: 6.10.8-301.current (64-bit) (Solus 4.5) KDE Plasma Version: 6.1.4 KDE Frameworks Version: 6.5.0 Qt Version: 6.7.2 ADDITIONAL INFORMATION I'm not very knowledgeable here, maybe this is just an incompatibility with my system, I wouldn't know.
Hardware: Processors: 4 × Intel® Core™ i5-7200U CPU @ 2.50GHz Memory: 15.5 GiB of RAM Graphics Processor: Mesa Intel® HD Graphics 620 Manufacturer: Dell Inc.
Thank you for the bug report! This issue was already reported in bug 491452, and some improvements to this are already implemented and will be released in Plasma 6.2, coming out in early October. (It's also available in the recent Plasma 6.2 beta, in case you want to help test things). I'm marking this as a duplicate of that bug; in case this isn't solved for you with the changes in 6.2, please feel free to reopen this bug or file a new one. *** This bug has been marked as a duplicate of bug 491452 ***