Choppy audio on my new Doorbell Pro

So I’ve been battling with ring support and my new doorbell pro for several weeks now to try and get a choppy audio issue solved. The issue is just when I’m listening to audio from a visitor (they can hear me fine). Their voice drops out with gaps every 2/3 seconds. Sometimes a single drop sometimes multiple in that time. I’ve tried extenders, mesh Wi-Fi, ubiquit access points, up rating my fibre speeds, ring chime pro you name it. I’ve also tried tethering my phones data connection and the doorbell is the same, choppy incoming audio. It’s a little better in the early mornings but never faultless. Ring say it’s my network but how can that be when I’ve got a strong signal at my doorbell via a mesh Wi-Fi or extender and down up speeds of 108/10mbps. Also to my mind that argument doesn’t stack when I’ve also tried it on a separate data network (via my mobile). If I had much hair left I’d have ripped it out by now so I’m reaching out to you guys in the hope someone else has had similar and resolved it? Many thanks in advance.