If you are experiencing constant ping spikes every 30-60 seconds or so, it might be do to your WiFi trying to search for networks. Here is how to disable this feature.
in your windows command prompt, type in
netsh wlan show settings
and one of the last things might say
Auto configuration logic is enabled on interface "Wireless Network Connection". if that's the case, then type in:
netsh wlan set autoconfig enabled=no interface="Wireless Network Connection"
It should respond with
Auto configuration has been disabled on interface "Wireless Network Connection".
Note: if that doesnt work, instead of "Wireless Network Connection", it may be "Wi-Fi" for you.