Making sure Pi devices are always available?

[CrystalGipsy (Resisting the flow!)]

Allo USBridge board

I am having issues with my DAC dropping off as the soundcard to my Bridge when I switch inputs on the dac and its left on the other input for a while. Any ideas what I can do, its becoming infuriating and pretty unreliable when I come to it I can use it wirhout rebooting, I have had discussions with Allo support and they asked my to change /DietPi/uEnv.txt aotg.urb_fix=1 to /DietPi/uEnv.txt aotg.urb_fix=0 but its not helped.