Stick Up Cam Wired connection shows 100MBps

My plan was to hook these cameras up with ethernet & POE. The POE works but the data connection isn’t working good enough to send consistent video over ethernet.

I’ve tried everything to get it to connect that way but it just won’t work properly. So at the moment it is being powered by POE but sending data via WiFi. This is the case with both my cameras. I’ve searched and found others having problems but no solutions.

Hooked up a second camera to the same ethernet connection and had the same problem. It’s not the cable because my laptop gets a high quality 1000 Mb connection. Can’t make any sense of it. Spoke to Ring support and got basic, “reboot it, reset to factory and start over, reboot router, reboot modem…” None of this helped.