XFinity internet dropping in the morning

[GRRedwings]

I've had issues off and on for two months with Comcast.  I've have all the lines replaced from the road, into the house.  Comcast has checked for noise all over my area and said everything is fine.

They put in their Comcast modem for a few weeks and I didn't have the issue with the internet dropping in the morning.  So after a few weeks of using their modem I switched back to the CM1200, and the issues came back.

Talking to netgear support they say the issue is that only 4 of the 8 upstream channels are locked and that Comcat needs to reconfigure the modem.  Comcast says they have no way to reconfigure a 3rd party modem, and that all channels are "green".  What do I do?

[FURRYe38]

Please post a copy and paste of the modems connection status page.
Have the ISP check the signal and line quality UP to the modem. Be sure the ISP provisions the modem correctly.
Be sure there are no coax cable line splitters in the between the modem and ISP service box. 
Be sure your using good quality RG6 coax cable up to the modem. 
Be sure to power OFF the modem for 1 minute them back ON.
https://community.netgear.com/t5/Cable-Modems-Routers/General-info-and-Troubleshooting-for-Cable-Mod...

[GRRedwings]

Here is the modem status page.  

https://imgur.com/txZC8JU

Everything else I have verified and tried.

[GRRedwings]

In doing more research, I'm getting discouraged by the support I have been given. If I understand what I'm reading, the Upstream of Docsis 3.1 has 8 channels. The intention is never that all 8 HAVE to be used, but they are available to providers so they can increase the upload capacity. There is nothing saying that they all need to be connected.  It's like saying I have 4 roads coming into my city, if 1 is out no one can get in. I understand that you take away 1/4 of the capacity it's slower, but it should not make it stop working all together.

In more reading, Comcast mainly supports 3 & 4 upstream channels. So for netgear support to suggest that anything short of 8 is a problem, that seems very wrong. So I had to call multiple times and have support tell me each time that the only fix is for Comcast to lock 8 channels, this seems like poor tech support training. Unless I'm missing something.

[FURRYe38]

Yes, 1st level support isn't always the greatest. 

Yes, normally depending upong the ISP and upload capacity. NOT all upload channels will be used. Example I'm on 50Mbps uload package. Only 4 channesl are used on my CM1200 modem. ALL thats ever been since getting that speed tier. I had 12 and 20Bmps before and only 1 or 2 channels were used for those speeds.