We experience occasional, but sometimes serious, degredation of Zoom/Teams video calls: freezing, drop-outs, random disconnections. WiFi connections in the rooms where we Zoom are solid (device is within 5m of the Super Hub). We've tried using an Ethernet connection and didn't experience any serious problems, but that doesn't really prove anything as they're infrequent.
We have no problem with download rates (iPlayer etc streams fine with only very rare interruptions). No-one in the house is gaming at any time, nor streaming TV during the daytime, and we're not running a Torrent or other server.
I've been running a Broadband Quality Monitor for a few months now. I wondered if these recent snapshots indicate a problem or whether they fall within a normal range:
4-5 Feburary 2021:

2 Feb 2021:

1 Feb 2021:

29 Jan 2021:

19 Jan 2021:
