I installed my Ring Video Doorbell Pro on 12-22-18
Since the installation, I have not used the 2-way Audio feature even once!
So, I do not know if this has always been a problem.
Because of periodic bad Signal Strength (RSSI -80 +/-), I added a Ring Chime Pro yesterday.
That fixed my Signal Strength (now RSSI -42 +/-).
But, while testing the Chime Pro Tones, I tried to communicate with my wife at the Doorbell Pro with me in the Living Room.
The Audio was very Static(ky), very garbled, & unintelligible.
It got a tad better as I spoke over & over & over again - but still horrible.
When I tried later, the exact same thing happenned again, then got a tad better - but still horrible.
I tried it several times over 1 1/2 days with the same horrible results.
I also tried it with me being at the farthest corner of the house.
Although it was a little better, it still was pretty horrible.
I am doing all of this using the Rapid Ring App.
The Chime Pro is in the Foyer.
The Doorbell Pro is on the other side of the Foyer Wall on a Covered Front Porch.