nighthawk C7100V ping delays

[junaid27]

Using netgear C7100V with Xfinity cable connection. I am facing ping delay time (up-to 30ms) on wired cable directly connected to my laptop. Overall performance via cable modem/router is not stable. No ping drops to internet or on lan but some ping time gets high in between. What can be the reason. Pls help. Thanks in advance.

[plemans]

How are you testing these ping times? 

I find a lot of people say they have ping issues when hardwired and then when you figure out where the issue is, its not in the computer---->router/modem connection. Its after that going modem---->isp----level3/other backbone supplier.