Jerky Video Recording

[AdamSLB]

Hi

Over the last two years we have made numerous recordings with Zoom, using two webcams (one face on, the second overhead on the desk).  Having  just checked back all our recordings today (10 or so), roughly since January are very jerky on the overhead camera.  Previously the recordings are smooth and look great.

Please advise how this might have occurred and if it can be remedied

Thanks