High Ping/Packet Loss/Latency

Hi, this has been happening for months now but I regularly get serious lag spikes. I've done all the usual tests, power cycled the modem. I'm connected to my home network via cat5e cords and I've tested all the cords. I then pinged my router via my desktop and saw that there were not any issues.

I've since connect directly to my cable modem via a cat5e line and pinged google at 10pm PST. Here are my results.

20 packets transmitted, 20 packets received, 0.0% packet loss

round-trip min/avg/max/stddev = 14.783/100.547/417.696/113.310 ms

An average of 100.547ms for internet blast pro is unacceptable as is the high of 417.696ms. This is ridiculous.

Doesn't help that I've had a couple of calls dropped on me by comcast "agents" who have never called me back to resolve the issue after they "run diagnostics".