Choppy audio when talking starts.

Is there any way to fix this issue? I just got the new ring doorbell for my mother with dementia. It makes it really easy for her to contact me and for me to keep track of her. The issue is that as soon as she talks the audio becomes completely choppy and I can’t hear her at all. The audio is fine before she talks.. I can hear everything going on, background noise, TV etc. but as soon as she talks. Inaudible. We are both on good internet. Her internet is not used by anything else except Ring. Not sure what to do and it is defeating the purpose of buying this thing Thank you for any help. Much appreciated.