Frequent packet loss / latency on WAN connection.

[sef1414]

I find myself banging my head against the wall. First I'll state that this very well may not be a pfsense issue. Recently my WAN connection is frequently going offline. The remedy to this is restarting my modem. This happened a year ago and the final solution was to replace my modem. I stopped having issues after that. A couple weeks ago this began happening again. My WAN connection goes offline on a daily basis. I replaced my modem again, but this time, that hasn't made any improvement. I contacted Cox (my ISP) and they advised that everything looks good on their end. They didn't provide much assistance. I tried replacing the cable as well, and even the modem power cable in a desperation heave. Any insights are appreciated.