Legend Audio Communications Error

Hi Community!

I need help by our new issue.  

Exception: Legend Audio Communications error, hardware Underrun

Im getting this error every time i play the timeline. Although it says audio hardware, it does so even with only video on the timeline. Rendering the section helps so maybe its an i/o read/write speed?

We are running on Media Composer 8.4.5 and ISIS 1000, 10GB network card, where Jumbo packet is disabled. If i enable the jumbo packet, i am getting some errors form isis. I already did Media Composer reinstalation, but no luck.

Thanks for your help.

Regards,

Kristian