On Debian 8.9 with Mixxx git master r6402; built on: Dec 2 2017, master out set to a USB sound card, headphone out set to internal sound card, dragging and dropping tracks either to a crate or a deck causes the master out audio to stutter during the dragging. (I didn't check the headphone audio.)
This was not a problem with 2.0 but I will test again. I wanted to file this before I forgot.
On Debian 8.9 with Mixxx git master r6402; built on: Dec 2 2017, master out set to a USB sound card, headphone out set to internal sound card, dragging and dropping tracks either to a crate or a deck causes the master out audio to stutter during the dragging. (I didn't check the headphone audio.)
This was not a problem with 2.0 but I will test again. I wanted to file this before I forgot.