I have a Focusrite 18i20 (3rd Generation) I am using to try and get multiple live instruments into a Zoom meeting. I have it setup so you can hear the multiple inputs into the interface that are the routed to 1 channel input and sent to Zoom mono. Everything works fine and you can hear each individual microphone seperately by other Zoom users at a normal level but will stop/crash the audio once all are going past a certain threshold. Maybe too much processing? Is there a setting or setup issue I have missed?

I followed Focusrites guidelines to setting this up correctly found here:

https://support.focu…cles/115000794545

Windows 10
6gb RAM