Cloud Recording Resolution

Our last two Zoom Cloud Recording came in at:
• 1686x720 (Windows laptop with built-in webcam) and
• 1832x982 (Mac with built-in webcam).

We used to consistently get 1280x720 but now it seems variable.
Any ideas on this?
We have the HD settings on in the master account but can't tell you about the guest/speaker's settings.

Thank you.

T