video conferencing unusable due to video and audio freezes
We have a persistent problem where the attendees report that my video/audio freezes several times per minute 3 to 10 seconds. Although I can continue to see and hear the participants. So must be my Xfinity service upload link? App doesn't matter: Zoom, Skype, WebEx, MS Teams. Wired or Wifi connection. Happens on all our computers - work & home and tablets. We currently have the 600 Mpbs Internet plan.
All Xfinity support would say is reboot the modem - tried this all the time but still the same. Had 2 techs come over to check the house network wiring and connection to the street box (pedestal) - no issues. Had the Xfinity gateway modem replaced twice. So it must be further upstream.
I seen other threads in the forum (example: https://forums.xfinity.com/conversations/your-home-network/video-conferencing-unusable-due-to-video-and-audio-freezes/602daea6c5375f08cdf13550) but are just closed with no resolution.
Any guidance -- how to troubleshoot? How to get Xfinity's attention to look beyond just my home setup, wiring and modem? Thanks.