Comcast and Speed

[Ghoulardi57]

Just upgraded to 200 from 100mbps with Xfinity.
I am still getting speeds from previous service, about 92mbps.

Restarted my C3700v2 many times and Comcast is so far no help.

They insinuated I migght be better off with newer a router supporting DOCSIS 3.1.

Is this required or just BS to cover themselves?

[FURRYe38]

Are you speed testing with a wired or wireless device? Wired is preferred.

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...

The 3700 modem is capable of 200Mpbs...

[Ghoulardi57]

Wreless and  have done all this.

Here are some scrennshots as I wasn't sure exactly what you needed.

[FURRYe38]

Please use the Choose File button when you post to attach your capture files. Sometimes it takes longer using the inline as a forum moderator needs to approve the pictures. 

[Ghoulardi57]

Attached again as requested

[plemans]

A couple things. 

1. your power levels are pretty high. You want between -7.5dbmv and +7.5dbmv. you're 12+. a bit hot. A attenuator a even a 3x splitter could maybe help.

2. are you testing wired? or wireless? the c3700 isn't the highest performing combo device. 

3. your wired speeds. if you're testing wired. are you connecting at gigabit speeds? you're results are implying on 10/100mbps speeds. 

You can view them here:

https://kb.netgear.com/24222/How-do-I-display-Internet-port-statistics-on-my-Nighthawk-router