Same gear, new house & ISP - ISSUE: Refreshing websites constantly

I know that Charter in my area requires that we use THEIR provided modem.   We do not have the ability to purchase our own Modem and use it in place of theirs.   Of course, this may be different in your area since they have a list of acceptable mdoems.  It's hard to say anymore because Charter has bought out some other providers and may have grandfathered in some of the other provider's rules.

If they allow you to use your own modem, at a minimum they will need to have the MAC address of your router and provision it to your account.  Otherwise, it will not be seen or accepted as a legal device.

The other issue I see is that if it is NOT on the list of acceptable modems, then they may not allow it on their network, and you will have to use one of theirs.

A charter representative did tell me that they only provide 1 upstream channel, and told me that Xfinity does provide 4. 

Downstream Channels
 
 

 
Power Level:
Signal to Noise Ratio:
Channel 1:
-1.2 dBmV
37.6 dB
Channel 2:
-1.3 dBmV
37.5 dB
Channel 3:
-1.7 dBmV
37.2 dB
Channel 4:
-1.8 dBmV
37.1 dB
Channel 5:
-2.3 dBmV
37.5 dB
Channel 6:
-2.6 dBmV
37.3 dB
Channel 7:
-2.8 dBmV
37.2 dB
Channel 8:
-3.0 dBmV
37.2 dB

Upstream Channels
 
 

 
Power Level:
Channel 1:
40.3 dBmV
Channel 2:
0.0 dBmV
Channel 3:
0.0 dBmV
Channel 4:
0.0 dBmV