Periodic major packet loss

[AlexRogo]

I am experiencing huge packet loss and I cant determine the source.  Cable modem, router, and MacBook register super high Mbps speed and yet Zoom stutters.  I've watched the statistics and can see the occurrence and no idea of a pattern.  Ive changed my DNS from Comcast to Google and "seemed" to be better but still occurring.

I try to do a screen grab and it changes too fast, but the one I've attached one showing a 27% packet loss.

Dang, I'd appreciate help.