Created attachment 177924 [details]
Plasma Volume dragging

SUMMARY
The responsiveness of volume sliders is less than amazing, both for input (microphones) and output (speakers, headphones). Dragging the slider changes the actual real-life volume, but the slider updates with a huge multi-second delay. This behavior is reproducible with all my input and output audio devices. The lag is present both is applet and in system settings page.

This is less than amazing and certainly is a regression compared to Plasma 5 and maybe earlier versions of Plasma 6.

Note that there is no such delay for scrolling over the Volume applet icon or global shortcuts.

Honestly looks like events throttling gone wrong.

STEPS TO REPRODUCE
1. Open Volume applet.
2. Drag some volume sliders around until their knobs start lagging behind.

OBSERVED RESULT
Laggy

EXPECTED RESULT
Snappy

SOFTWARE/OS VERSIONS
Operating System: Arch Linux 
KDE Plasma Version: 6.2.5
KDE Frameworks Version: 6.10.0
Qt Version: 6.8.2
Kernel Version: 6.12.10-arch1-1 (64-bit)
Graphics Platform: X11
Processors: 16 × AMD Ryzen 9 7940HS w/ Radeon 780M Graphics
Memory: 60.6 GiB of RAM
Graphics Processor: AMD Radeon 780M
Manufacturer: Framework
Product Name: Laptop 16 (AMD Ryzen 7040 Series)

ADDITIONAL INFORMATION