Comment 8 for bug 197460

> i dont think hardware resources are an issue, i am running dual xeons
> 2.4 here and oddly the slider problems are only in on direction. When i
> flick a volume slider from min to max with my finger it gets there but
> if i go from max to min it stops 2/3 of the way. Anyhow i cant use it as
>i cant play any tracks :)

The crossfader is one place where I could see you going from 0 to Middle or other side, however min to max on the volume is not something I'd ever do...

Anyway, there are a couple things... moving too quickly, the hercules may not generate all of the events or the combo of libUSB + libDJConsole + Mixxx may not receive all the events.

There is one more thing you can try:
* minimize Mixxx and then play with the volume sliders, etc, while it is minimized using your Herc Mk2... (this will cause the app to skip the step of painting the UI updates)

If you find that things are much more responsive then the problem lies with Mixxx (or Mixxx + Nvidia drivers) and it's inability to keep the UI updated on very fast input events.

-G