Lost Connection with Netgear CM700 and Nighthawk R7000

I am facing two problems:

• Lost connection: I lose connection every day and it can take a few minutes before the connection comes back. Sometimes it comes back on its own and other times I have to restart both the modem and router
• Slow connection: I am paying for 800Mbps, but I am really getting an average speed of 130Mbps when I test the connection multiple times on multiple different websites.

My equipment:

• Netgear CM700
• Netgear Nighthawk R7000 (firmware V1.0.9.64_10.2.64)

What I have tried:

• Called Xfinity a few times and the last two times I called both agents said everything looks good and they recommended calling Netgear to see if the issue is in the equipment
• I tried to update the rollback of the router firmware, but no luck, that did not make a difference
• Lastly, I looked at the modem logs and I found errors that are also reported online, and it seems that those errors are not related to equipment defects.

This problem has been going on for two months now and it's getting really annoying when living in a house where everyone uses the internet for school/work.

Below attached is the event log and cable connection data for the modem, right after restarting. 

It's a google doc so just click the link and the pictures will be in there

https://docs.google.com/document/d/1V6WgQKKRjNj_2DfQkY39Tx-9EWpFLLjpxicYEdWpodI/edit?usp=sharing