Internet Dropping and Slow Wired Speeds

I have been having issues with my internet speeds now for about a month.  I have 800Mbps internet and am using my own modem (Arris S33) with a Google Wifi mesh router system.  Also as a side note I use a MoCA network to bring "wired" internet into an additional room in the house.

The wired speed straight from the modem I have been seeing is around 100-600 Mbps and varies a lot from speed test to speed test.  WiFi varies even more and can range from 50-500 Mbps.  I understand the WiFi can be from a multitude of reason so that doesn't bother me as much as the straight wired speed.

On top of that last week the internet started dropping anywhere from 2-8 times a day for like a half hour at a time or sometimes even requires a modem reset to fix.

I have gone through the whole process of resetting everything multiple times and even went through all the coax and ethernet cables and replaced them with new to make sure there wasn't an issue there but nothing seems to help.  Xfinity customer service just tells me its the modem and Arris customer service just tells me its the incoming signal from Xfinity so I am in an infinite loop and still have the problem.  Any help would be great.

I attached the logs and numbers from the modem.