BUG: Premiere Pro cc2020 (v14.0) - Audio Device Playback settings not working correctly
Select something other than "Adobe Desktop Audio", such as Blackmagic Playback, and hit OK to leave settings. Playback via Blackmagic then doesn't work and returning to Preferences has "Adobe Desktop Audio" selected again. This means that you can't use 'offsets' in the same panel to make your monitoring in sync.
Tested with several Blackmagic drivers - always the same result.
Re-tested with cc2019 and everything works fine.
I managed to get "Blackmagic Playback" to stick as the Audio Device by setting it, leaving Preferences, (at which point the sequence won't play), then opening a different sequence. This all then works as it should until you leave the project. When you come back in it often reverts back to "Adobe Desktop Audio". Sometimes it works, but not for long. You notice the A/V sync has gone out and when tested the audio is some 7 frames behind the picture. Checking in Preferences once again "Adobe Desktop Audio" has magically been selected.