Updated to new beta on Friday and did a 3 hour ride on Saturday and every 5 or so minutes was getting “Heart Rate Monitor Connected”. Rode with heart rate screen on and indeed the data for current heart rate would drop out for a while then come back on then drop out again all the time.
Also connected to the Edge were Vector 3 pedals, 510 rear radar and speed sensor which did not drop out and worked fine, only the HRM.
No issue with HRM previously (MyZone Switch).