My set-up failed me again

Win 10
I7 32gb ram
M.2 ssd
My usb is hardwired out of keyboards into a powered usb hub.

M audio keystation 61

There is a know problem with the usb on m audio - it randomly doesn’t empty it’s usb buffers- so if buffer is full
It stops sending data.

The midi port works properly- if found this out the hard way.
Cheers