help with internet having high lagging spikes shown in ping test

hello everyone my internet has been having this problem for a very good while and i am getting very frustrated with it.
i have an xfinity tc8305c modem, and i play online video games alot and every 3 to 5 minutes i get a severe lag spike
i have gotten this for months and never knew what the problem is until now. here is a ping test that i ran for the first time and here are the results
Reply from 8.8.8.8: bytes=32 time=31ms TTL=48
Reply from 8.8.8.8: bytes=32 time=37ms TTL=48
Reply from 8.8.8.8: bytes=32 time=31ms TTL=48
Reply from 8.8.8.8: bytes=32 time=31ms TTL=48
Reply from 8.8.8.8: bytes=32 time=31ms TTL=48
Reply from 8.8.8.8: bytes=32 time=35ms TTL=48
Reply from 8.8.8.8: bytes=32 time=30ms TTL=48
Reply from 8.8.8.8: bytes=32 time=31ms TTL=48
Reply from 8.8.8.8: bytes=32 time=31ms TTL=48
Reply from 8.8.8.8: bytes=32 time=31ms TTL=48
Reply from 8.8.8.8: bytes=32 time=31ms TTL=48
Reply from 8.8.8.8: bytes=32 time=33ms TTL=48
Reply from 8.8.8.8: bytes=32 time=32ms TTL=48
Reply from 8.8.8.8: bytes=32 time=30ms TTL=48
Reply from 8.8.8.8: bytes=32 time=31ms TTL=48
Reply from 8.8.8.8: bytes=32 time=31ms TTL=48
Reply from 8.8.8.8: bytes=32 time=30ms TTL=48
Reply from 8.8.8.8: bytes=32 time=32ms TTL=48
Reply from 8.8.8.8: bytes=32 time=30ms TTL=48
Reply from 8.8.8.8: bytes=32 time=37ms TTL=48
Reply from 8.8.8.8: bytes=32 time=31ms TTL=48
Reply from 8.8.8.8: bytes=32 time=31ms TTL=48
Reply from 8.8.8.8: bytes=32 time=34ms TTL=48
Reply from 8.8.8.8: bytes=32 time=38ms TTL=48
Reply from 8.8.8.8: bytes=32 time=31ms TTL=48
Reply from 8.8.8.8: bytes=32 time=33ms TTL=48
Reply from 8.8.8.8: bytes=32 time=33ms TTL=48
Reply from 8.8.8.8: bytes=32 time=31ms TTL=48
Reply from 8.8.8.8: bytes=32 time=30ms TTL=48
Reply from 8.8.8.8: bytes=32 time=30ms TTL=48
Reply from 8.8.8.8: bytes=32 time=30ms TTL=48
Reply from 8.8.8.8: bytes=32 time=32ms TTL=48
Reply from 8.8.8.8: bytes=32 time=31ms TTL=48
Reply from 8.8.8.8: bytes=32 time=30ms TTL=48
Reply from 8.8.8.8: bytes=32 time=34ms TTL=48
Reply from 8.8.8.8: bytes=32 time=28ms TTL=48
Reply from 8.8.8.8: bytes=32 time=33ms TTL=48
Reply from 8.8.8.8: bytes=32 time=33ms TTL=48
Reply from 8.8.8.8: bytes=32 time=32ms TTL=48
Reply from 8.8.8.8: bytes=32 time=32ms TTL=48
Reply from 8.8.8.8: bytes=32 time=33ms TTL=48
Reply from 8.8.8.8: bytes=32 time=31ms TTL=48
Reply from 8.8.8.8: bytes=32 time=31ms TTL=48
Reply from 8.8.8.8: bytes=32 time=31ms TTL=48
Reply from 8.8.8.8: bytes=32 time=31ms TTL=48
Reply from 8.8.8.8: bytes=32 time=976ms TTL=48
Reply from 8.8.8.8: bytes=32 time=32ms TTL=48
Reply from 8.8.8.8: bytes=32 time=33ms TTL=48
Reply from 8.8.8.8: bytes=32 time=30ms TTL=48
Reply from 8.8.8.8: bytes=32 time=30ms TTL=48
Reply from 8.8.8.8: bytes=32 time=27ms TTL=48
Reply from 8.8.8.8: bytes=32 time=42ms TTL=48
Reply from 8.8.8.8: bytes=32 time=31ms TTL=48
Reply from 8.8.8.8: bytes=32 time=38ms TTL=48
Reply from 8.8.8.8: bytes=32 time=27ms TTL=48
Reply from 8.8.8.8: bytes=32 time=30ms TTL=48
Reply from 8.8.8.8: bytes=32 time=31ms TTL=48
Reply from 8.8.8.8: bytes=32 time=34ms TTL=48
Reply from 8.8.8.8: bytes=32 time=32ms TTL=48
Reply from 8.8.8.8: bytes=32 time=28ms TTL=48
Reply from 8.8.8.8: bytes=32 time=33ms TTL=48
Reply from 8.8.8.8: bytes=32 time=32ms TTL=48
Reply from 8.8.8.8: bytes=32 time=31ms TTL=48
Reply from 8.8.8.8: bytes=32 time=30ms TTL=48
Reply from 8.8.8.8: bytes=32 time=35ms TTL=48
Reply from 8.8.8.8: bytes=32 time=30ms TTL=48
Reply from 8.8.8.8: bytes=32 time=32ms TTL=48
Reply from 8.8.8.8: bytes=32 time=34ms TTL=48
Reply from 8.8.8.8: bytes=32 time=35ms TTL=48
Reply from 8.8.8.8: bytes=32 time=31ms TTL=48
Reply from 8.8.8.8: bytes=32 time=31ms TTL=48
Reply from 8.8.8.8: bytes=32 time=36ms TTL=48
Reply from 8.8.8.8: bytes=32 time=31ms TTL=48
Reply from 8.8.8.8: bytes=32 time=30ms TTL=48
Reply from 8.8.8.8: bytes=32 time=34ms TTL=48
Reply from 8.8.8.8: bytes=32 time=30ms TTL=48
Reply from 8.8.8.8: bytes=32 time=57ms TTL=48
Reply from 8.8.8.8: bytes=32 time=34ms TTL=48
Reply from 8.8.8.8: bytes=32 time=31ms TTL=48
Reply from 8.8.8.8: bytes=32 time=30ms TTL=48
Reply from 8.8.8.8: bytes=32 time=31ms TTL=48
Reply from 8.8.8.8: bytes=32 time=27ms TTL=48
Reply from 8.8.8.8: bytes=32 time=31ms TTL=48
Reply from 8.8.8.8: bytes=32 time=31ms TTL=48
Reply from 8.8.8.8: bytes=32 time=35ms TTL=48
Reply from 8.8.8.8: bytes=32 time=31ms TTL=48
Reply from 8.8.8.8: bytes=32 time=38ms TTL=48
Reply from 8.8.8.8: bytes=32 time=33ms TTL=48
Reply from 8.8.8.8: bytes=32 time=30ms TTL=48
Reply from 8.8.8.8: bytes=32 time=31ms TTL=48
Reply from 8.8.8.8: bytes=32 time=31ms TTL=48
Reply from 8.8.8.8: bytes=32 time=31ms TTL=48
Reply from 8.8.8.8: bytes=32 time=247ms TTL=48
Reply from 8.8.8.8: bytes=32 time=34ms TTL=48
Reply from 8.8.8.8: bytes=32 time=30ms TTL=48
Reply from 8.8.8.8: bytes=32 time=31ms TTL=48
Reply from 8.8.8.8: bytes=32 time=31ms TTL=48
Reply from 8.8.8.8: bytes=32 time=31ms TTL=48
Reply from 8.8.8.8: bytes=32 time=31ms TTL=48
Reply from 8.8.8.8: bytes=32 time=35ms TTL=48
Reply from 8.8.8.8: bytes=32 time=31ms TTL=48
Reply from 8.8.8.8: bytes=32 time=32ms TTL=48
Reply from 8.8.8.8: bytes=32 time=31ms TTL=48
Reply from 8.8.8.8: bytes=32 time=30ms TTL=48
Reply from 8.8.8.8: bytes=32 time=34ms TTL=48
Reply from 8.8.8.8: bytes=32 time=34ms TTL=48
Reply from 8.8.8.8: bytes=32 time=30ms TTL=48
Reply from 8.8.8.8: bytes=32 time=30ms TTL=48
Reply from 8.8.8.8: bytes=32 time=30ms TTL=48
Reply from 8.8.8.8: bytes=32 time=30ms TTL=48
Reply from 8.8.8.8: bytes=32 time=30ms TTL=48
Reply from 8.8.8.8: bytes=32 time=31ms TTL=48
Reply from 8.8.8.8: bytes=32 time=30ms TTL=48
Reply from 8.8.8.8: bytes=32 time=27ms TTL=48
Reply from 8.8.8.8: bytes=32 time=31ms TTL=48
Reply from 8.8.8.8: bytes=32 time=32ms TTL=48
Reply from 8.8.8.8: bytes=32 time=31ms TTL=48
Reply from 8.8.8.8: bytes=32 time=31ms TTL=48
Reply from 8.8.8.8: bytes=32 time=33ms TTL=48
Reply from 8.8.8.8: bytes=32 time=32ms TTL=48
Reply from 8.8.8.8: bytes=32 time=31ms TTL=48
Reply from 8.8.8.8: bytes=32 time=31ms TTL=48
Reply from 8.8.8.8: bytes=32 time=35ms TTL=48
Reply from 8.8.8.8: bytes=32 time=33ms TTL=48
Reply from 8.8.8.8: bytes=32 time=31ms TTL=48
Reply from 8.8.8.8: bytes=32 time=31ms TTL=48
Reply from 8.8.8.8: bytes=32 time=31ms TTL=48
Reply from 8.8.8.8: bytes=32 time=30ms TTL=48
Reply from 8.8.8.8: bytes=32 time=32ms TTL=48
Reply from 8.8.8.8: bytes=32 time=35ms TTL=48
Reply from 8.8.8.8: bytes=32 time=31ms TTL=48
Reply from 8.8.8.8: bytes=32 time=31ms TTL=48
Reply from 8.8.8.8: bytes=32 time=31ms TTL=48
Reply from 8.8.8.8: bytes=32 time=31ms TTL=48
Reply from 8.8.8.8: bytes=32 time=30ms TTL=48
Reply from 8.8.8.8: bytes=32 time=31ms TTL=48
Reply from 8.8.8.8: bytes=32 time=30ms TTL=48
Reply from 8.8.8.8: bytes=32 time=30ms TTL=48
Reply from 8.8.8.8: bytes=32 time=30ms TTL=48
Reply from 8.8.8.8: bytes=32 time=30ms TTL=48
Reply from 8.8.8.8: bytes=32 time=30ms TTL=48
Reply from 8.8.8.8: bytes=32 time=30ms TTL=48
Reply from 8.8.8.8: bytes=32 time=30ms TTL=48
Reply from 8.8.8.8: bytes=32 time=32ms TTL=48
Reply from 8.8.8.8: bytes=32 time=32ms TTL=48
Reply from 8.8.8.8: bytes=32 time=30ms TTL=48
Reply from 8.8.8.8: bytes=32 time=1724ms TTL=48
Reply from 8.8.8.8: bytes=32 time=32ms TTL=48
Reply from 8.8.8.8: bytes=32 time=30ms TTL=48
Reply from 8.8.8.8: bytes=32 time=30ms TTL=48
Reply from 8.8.8.8: bytes=32 time=35ms TTL=48
Reply from 8.8.8.8: bytes=32 time=33ms TTL=48
Reply from 8.8.8.8: bytes=32 time=30ms TTL=48
Reply from 8.8.8.8: bytes=32 time=30ms TTL=48
Reply from 8.8.8.8: bytes=32 time=31ms TTL=48
Reply from 8.8.8.8: bytes=32 time=31ms TTL=48
Reply from 8.8.8.8: bytes=32 time=45ms TTL=48
Reply from 8.8.8.8: bytes=32 time=36ms TTL=48
Reply from 8.8.8.8: bytes=32 time=37ms TTL=48
Reply from 8.8.8.8: bytes=32 time=32ms TTL=48
Reply from 8.8.8.8: bytes=32 time=33ms TTL=48
Reply from 8.8.8.8: bytes=32 time=32ms TTL=48
Reply from 8.8.8.8: bytes=32 time=31ms TTL=48
Reply from 8.8.8.8: bytes=32 time=69ms TTL=48
Reply from 8.8.8.8: bytes=32 time=64ms TTL=48
Reply from 8.8.8.8: bytes=32 time=34ms TTL=48
Reply from 8.8.8.8: bytes=32 time=32ms TTL=48
Reply from 8.8.8.8: bytes=32 time=32ms TTL=48
Reply from 8.8.8.8: bytes=32 time=67ms TTL=48
Reply from 8.8.8.8: bytes=32 time=27ms TTL=48
Reply from 8.8.8.8: bytes=32 time=31ms TTL=48
Reply from 8.8.8.8: bytes=32 time=31ms TTL=48
Reply from 8.8.8.8: bytes=32 time=30ms TTL=48
Reply from 8.8.8.8: bytes=32 time=31ms TTL=48
Reply from 8.8.8.8: bytes=32 time=30ms TTL=48
Reply from 8.8.8.8: bytes=32 time=30ms TTL=48
Reply from 8.8.8.8: bytes=32 time=32ms TTL=48
Reply from 8.8.8.8: bytes=32 time=30ms TTL=48
Reply from 8.8.8.8: bytes=32 time=30ms TTL=48
Reply from 8.8.8.8: bytes=32 time=30ms TTL=48
Reply from 8.8.8.8: bytes=32 time=30ms TTL=48
Reply from 8.8.8.8: bytes=32 time=31ms TTL=48
Reply from 8.8.8.8: bytes=32 time=30ms TTL=48
Reply from 8.8.8.8: bytes=32 time=32ms TTL=48
Reply from 8.8.8.8: bytes=32 time=32ms TTL=48
Reply from 8.8.8.8: bytes=32 time=30ms TTL=48
Reply from 8.8.8.8: bytes=32 time=30ms TTL=48
Reply from 8.8.8.8: bytes=32 time=30ms TTL=48
Reply from 8.8.8.8: bytes=32 time=30ms TTL=48
Reply from 8.8.8.8: bytes=32 time=31ms TTL=48
Reply from 8.8.8.8: bytes=32 time=33ms TTL=48
Reply from 8.8.8.8: bytes=32 time=30ms TTL=48
Reply from 8.8.8.8: bytes=32 time=32ms TTL=48
Reply from 8.8.8.8: bytes=32 time=37ms TTL=48
Reply from 8.8.8.8: bytes=32 time=31ms TTL=48
Reply from 8.8.8.8: bytes=32 time=35ms TTL=48
Reply from 8.8.8.8: bytes=32 time=30ms TTL=48
Reply from 8.8.8.8: bytes=32 time=34ms TTL=48
Reply from 8.8.8.8: bytes=32 time=30ms TTL=48
Reply from 8.8.8.8: bytes=32 time=31ms TTL=46
Reply from 8.8.8.8: bytes=32 time=35ms TTL=46
Reply from 8.8.8.8: bytes=32 time=32ms TTL=46
Reply from 8.8.8.8: bytes=32 time=34ms TTL=46
Reply from 8.8.8.8: bytes=32 time=30ms TTL=46
Reply from 8.8.8.8: bytes=32 time=32ms TTL=46
Reply from 8.8.8.8: bytes=32 time=34ms TTL=46
Reply from 8.8.8.8: bytes=32 time=30ms TTL=46
Reply from 8.8.8.8: bytes=32 time=30ms TTL=46
Reply from 8.8.8.8: bytes=32 time=37ms TTL=46
Reply from 8.8.8.8: bytes=32 time=30ms TTL=48
Reply from 8.8.8.8: bytes=32 time=31ms TTL=48
Reply from 8.8.8.8: bytes=32 time=39ms TTL=48
Reply from 8.8.8.8: bytes=32 time=30ms TTL=48
Reply from 8.8.8.8: bytes=32 time=33ms TTL=48
Reply from 8.8.8.8: bytes=32 time=32ms TTL=48
Reply from 8.8.8.8: bytes=32 time=36ms TTL=48
Reply from 8.8.8.8: bytes=32 time=35ms TTL=48
Reply from 8.8.8.8: bytes=32 time=35ms TTL=48
Reply from 8.8.8.8: bytes=32 time=36ms TTL=48
Reply from 8.8.8.8: bytes=32 time=31ms TTL=48
Reply from 8.8.8.8: bytes=32 time=31ms TTL=48
Reply from 8.8.8.8: bytes=32 time=32ms TTL=48
Reply from 8.8.8.8: bytes=32 time=30ms TTL=48
Reply from 8.8.8.8: bytes=32 time=31ms TTL=48
Reply from 8.8.8.8: bytes=32 time=37ms TTL=48
Reply from 8.8.8.8: bytes=32 time=30ms TTL=48
Reply from 8.8.8.8: bytes=32 time=34ms TTL=48
Reply from 8.8.8.8: bytes=32 time=36ms TTL=48
Reply from 8.8.8.8: bytes=32 time=31ms TTL=48
Reply from 8.8.8.8: bytes=32 time=30ms TTL=48
Reply from 8.8.8.8: bytes=32 time=42ms TTL=48
Reply from 8.8.8.8: bytes=32 time=50ms TTL=48
Reply from 8.8.8.8: bytes=32 time=48ms TTL=48
Reply from 8.8.8.8: bytes=32 time=49ms TTL=48
Reply from 8.8.8.8: bytes=32 time=45ms TTL=48
Reply from 8.8.8.8: bytes=32 time=31ms TTL=48
Reply from 8.8.8.8: bytes=32 time=31ms TTL=48
Reply from 8.8.8.8: bytes=32 time=30ms TTL=48
Reply from 8.8.8.8: bytes=32 time=32ms TTL=48
Reply from 8.8.8.8: bytes=32 time=32ms TTL=48
Reply from 8.8.8.8: bytes=32 time=30ms TTL=48
Reply from 8.8.8.8: bytes=32 time=30ms TTL=48
Reply from 8.8.8.8: bytes=32 time=32ms TTL=48
Reply from 8.8.8.8: bytes=32 time=30ms TTL=48
Reply from 8.8.8.8: bytes=32 time=31ms TTL=48
Reply from 8.8.8.8: bytes=32 time=32ms TTL=48
Reply from 8.8.8.8: bytes=32 time=31ms TTL=48
Reply from 8.8.8.8: bytes=32 time=30ms TTL=48
Reply from 8.8.8.8: bytes=32 time=30ms TTL=48
Reply from 8.8.8.8: bytes=32 time=30ms TTL=48
Reply from 8.8.8.8: bytes=32 time=31ms TTL=48
Reply from 8.8.8.8: bytes=32 time=2965ms TTL=48
Reply from 8.8.8.8: bytes=32 time=31ms TTL=48
Reply from 8.8.8.8: bytes=32 time=31ms TTL=48
Reply from 8.8.8.8: bytes=32 time=31ms TTL=48
Reply from 8.8.8.8: bytes=32 time=34ms TTL=48
Reply from 8.8.8.8: bytes=32 time=30ms TTL=48
Reply from 8.8.8.8: bytes=32 time=32ms TTL=48
Reply from 8.8.8.8: bytes=32 time=32ms TTL=48
Reply from 8.8.8.8: bytes=32 time=31ms TTL=48
Reply from 8.8.8.8: bytes=32 time=30ms TTL=48
Reply from 8.8.8.8: bytes=32 time=33ms TTL=48
Reply from 8.8.8.8: bytes=32 time=33ms TTL=48
Reply from 8.8.8.8: bytes=32 time=31ms TTL=48
Reply from 8.8.8.8: bytes=32 time=32ms TTL=48
Reply from 8.8.8.8: bytes=32 time=31ms TTL=48
Reply from 8.8.8.8: bytes=32 time=32ms TTL=48
Reply from 8.8.8.8: bytes=32 time=31ms TTL=48
Reply from 8.8.8.8: bytes=32 time=31ms TTL=48
Reply from 8.8.8.8: bytes=32 time=31ms TTL=48
Reply from 8.8.8.8: bytes=32 time=31ms TTL=48
Reply from 8.8.8.8: bytes=32 time=31ms TTL=48
Reply from 8.8.8.8: bytes=32 time=31ms TTL=48
Reply from 8.8.8.8: bytes=32 time=31ms TTL=48
Reply from 8.8.8.8: bytes=32 time=31ms TTL=48
Reply from 8.8.8.8: bytes=32 time=32ms TTL=48
Reply from 8.8.8.8: bytes=32 time=30ms TTL=48
Reply from 8.8.8.8: bytes=32 time=32ms TTL=48
Reply from 8.8.8.8: bytes=32 time=30ms TTL=48
Reply from 8.8.8.8: bytes=32 time=30ms TTL=48
Reply from 8.8.8.8: bytes=32 time=30ms TTL=48
Reply from 8.8.8.8: bytes=32 time=31ms TTL=48
Reply from 8.8.8.8: bytes=32 time=30ms TTL=48
Reply from 8.8.8.8: bytes=32 time=31ms TTL=48
Reply from 8.8.8.8: bytes=32 time=31ms TTL=48
Reply from 8.8.8.8: bytes=32 time=31ms TTL=48
Reply from 8.8.8.8: bytes=32 time=31ms TTL=48
Reply from 8.8.8.8: bytes=32 time=30ms TTL=48
Reply from 8.8.8.8: bytes=32 time=31ms TTL=48
Reply from 8.8.8.8: bytes=32 time=30ms TTL=48
Reply from 8.8.8.8: bytes=32 time=31ms TTL=48
Reply from 8.8.8.8: bytes=32 time=30ms TTL=48

Ping statistics for 8.8.8.8:
    Packets: Sent = 481, Received = 481, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
    Minimum = 27ms, Maximum = 2965ms, Average = 59ms
Control-C
^C
C:\Users\NuKe 95>
as you can see easily every couple of minutes the ping jumps up extremely high and this is what is causing me to lag
as far as trying to fix this my self.
i have unplugged all the other ether net ports and just plugged in my pc only still the same problem
i have rebooted the modem and my pc, no help
i have tried playing games by bringing my brothers pc to my house and testing it, and still the same problem
i have used different ethernet cables, no luck same problem
and i have plugged my modem into an entire different coaxial port in my apartment, but still the same problem
i plan on calling comcast today and trying to figure this out, if any of you guys have had experience in this problem, what is it that i need to tell the comcast agent to get the best results?
thanks for the help guys
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