Problem with my hybrid setup 2 x Xone K2 / Mixer PX5/ Tractor Pro Plus 3.8 & 3.9 and My MacBook Pro

Still I have a problem with the problem of „freezing” K2 when I’m playing without any signals.

Traktor PRo + version 3.8 and 3.9

What is most important :

·        Left K2 is on a channel 1 – turn off latching layers

·        Right K2 is on a channel 21 – turn off latching layers

·        Xone Px 5 is standard at channel 16.

What I Already tested or made. .

·        1st connection: The 2 units of K2 are connected with X link cable direct to PX5 and PX5 direct to USB port on MAC

·        2nd connection: The 2 units of K2 are connected with X link cable direct to PX5 + form left K2 by USB cable to mac and PX5 direct by USB port on MAC

·        3rd connection: The 2 units of K2 are connected with X link cable + left K2 are connected by USB cable to MC – there is no connection by K2 and Px5. Mixer PX5 is separate direct to USB port on MAC

·        4 connection – The 2 units of K2 are connected with X link cable direct to PX5 and Px5 direct t o USB port on MAC, and both k2 are connect by USB to power supply

As well, I have made steps in power on all system in 2 ways :

·        1st way – power on Mixer with K2 and after I'm turning on Mac and tractor

·        2nd way – power on Mac and after t the px5

In all of this connections like in a jeopardy – I do not know when they will go in frezz mode – it can be after 5 min it can be at 45 minis of playing and even after 2 or 3 hours.

Regarding my test, the K2 gone form a freezing mode without nay suptoms – they just go. All LEDs are flashing, but I can't control the tractor. – but buy computer mouse or touchpad I can !!

You can see it on the videos.

As well, I made a test by 2 midi apps Midi Monitor, and MidiView - where they didn’t show me any error in midi signal or any warnings when K2 are going to frezz mode.

 About the Mac – I use MacBook pro – 15 inc mid 2014 processor 2,5 GHZ  - I7 with 16 GB ram – system is macOS Big Sur version 11.7.7

– I still have a problem with setup and frezing K2 

The Xoen told me than my map is ok without any bugs

ANy idea how to solve