https://bugs.kde.org/show_bug.cgi?id=513248
ravencrowonyt <[email protected]> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |[email protected] --- Comment #4 from ravencrowonyt <[email protected]> --- (In reply to madness742 from comment #3) > After upgrading to Plasma 6.6, the performance has **SIGNIFICANTLY** > improved! > > But only when `Color profile` on both monitors are set to `Prefer color > accuracy`. Using a combination of `Prefer efficiency` and `Prefer color > accuracy` makes it laggy. > > `Prefer efficiency` is still extremely laggy, maybe even worse than before, > but the colours are all now messed up too. Text is almost unreadable when > using a very warm temperature, such as 1000k. > > From **very brief testing**, I don't notice my games stuttering anymore when > using `Switching times: Sunrise and sunset`. I tested it using a 1 minute > transition duration. > > After removing `KWIN_DRM_NO_AMS=1` (to workaround Bug 511793), the colour > issue with `Prefer efficiency` got fixed. Performance with `Prefer color > accuracy` remains unchanged with `Prefer color accuracy`. > > Operating System: Fedora Linux 43 > KDE Plasma Version: 6.6.1 > KDE Frameworks Version: 6.23.0 > Qt Version: 6.10.2 > Kernel Version: 6.18.12-200.fc43.x86_64 (64-bit) > Graphics Platform: Wayland > Processors: 32 × AMD Ryzen 9 7950X3D 16-Core Processor > Memory: 64 GiB of RAM (61,9 GiB usable) > Graphics Processor 1: AMD Radeon RX 7900 XTX > Graphics Processor 2: AMD Ryzen 9 7950X3D 16-Core Processor > Manufacturer: Micro-Star International Co., Ltd. > Product Name: MS-7D75 > System Version: 1.0 I wanted to add my experience with what appears to be a related issue after upgrading to KDE Plasma 6.8.0 on CachyOS. After the upgrade, I noticed significant sluggishness when opening Plasma UI elements, particularly the application launcher, calendar popup, and other dropdown menus. The animations were noticeably slow and laggy, making the desktop feel much less responsive. Interestingly, the issue affected **both of my monitors**, even though only my smaller secondary monitor was configured to use "Prefer color efficiency." **My setup:** - OS: CachyOS (Arch-based) - KDE Plasma: 6.8.0 - Graphics platform: Wayland - GPU: AMD Radeon RX 9070 XT - CPU: AMD Ryzen 9 9950X3D - Main monitor: Acer XV272U W2, 2560×1440, 240 Hz, set to "Prefer color accuracy" - Secondary monitor: Smaller 15-inch display, initially set to "Prefer color efficiency" - Different scaling factors between the two displays (100% primary, 160% secondary) **What fixed the problem:** I changed only the secondary monitor from "Prefer color efficiency" to "Prefer color accuracy," matching the primary monitor. The improvement was immediate. All of the previously sluggish launcher and popup animations became fast and responsive again on **both monitors**, without changing anything else. What's especially interesting is that the primary monitor was already set to "Prefer color accuracy," yet it still experienced the same sluggishness until I changed the setting on the secondary display. This seems consistent with the observation in Comment 3 regarding mixed color-processing preferences across multiple monitors. It may indicate that the setting on one display can affect KWin's overall rendering or compositing performance across other displays. I haven't isolated the underlying cause, but I wanted to document this because the difference was dramatic and the workaround completely resolved the issue in my configuration. -- You are receiving this mail because: You are watching all bug changes.
