Audio quits after ~10 seconds

[mcoulson]

My sound (headphones) quits after a few seconds - i can hear my bandmates but then it goes in and out until finally nothing. Sounds to me like there's interference that eventually takes over. 

background

• MacOS with scarlet focusrite 2i2 
  
• have been playing successfully for weeks with same setup
  
• upgraded to most recent version today - may 30
  
• bandmates can hear me fine, i just can't hear them (after first few seconds, where sound goes in and out)
  
• can play solo session no problem with audio
  
• i tried using internal mac mic - same result
  
• tried reconfiguring all audio - same result
  
• i tried de-installing / reinstalling - same result
  
• i ensured all my "security and privacy > accessibility" settings are correct
  
• i have searched the posts in the forum
  

help! thanks