Hitron Coda56 download speed it fluctuating a lot between 2200 to 300 Mbps while upload is almost coming same near about 350+

Hi All,

I was using CM2000 from netgear for long time while using 1000+Mbps service from Xfinity, initially even for that upload was 35 or 40 Mbps so CM2000 was ok. But since more 5-6 month or year upload was updated 200Mbps by Xfinity. And I came to know CM2000 doesn't support more than 45 upload speed with Xfinity. While looking around came to about Hitron Coda56 , listed as next gen device from Xfinity so thought of giving it a try and got it.

Connected easily via Xfinity mobile app started getting 2200 up and 460 down, tested using my Netgear Nighthawk App for RAX120.

But I am seeing lot of fluctuation in download speed, wherever I am testing. it will show 300+ download sometime and keep on changing between from 300 to 2200Mbps. While upload is always kind of constant moving between from 300 to 360, more often near to 360 side.

Now I am not sure if it is service issue or Modem issue. While I don't upload a lot it is nice to have higher upload speed specially for webex meeting etc, but this much fluctuating scare me for getting intermediate drops or disconnect. 

I don't want to be in business of modem restart frequently.

 Is anyone else having similar issue with Coda56 or should I peruse with Xfinity service to check connection issues.

Thanks in advance for the help,

Neeraj