.

OP probably wrote "reset" to imply Cox corrected something on their end.  It may not have been an actual reset, however.

You can locally reset by pressing the recessed button for 5-10 seconds on your device.  Cox can also "reset" by re-provisioning your account.

A Reset is a band Aid at best. The problem is not at your TAP, inside your house etc. The problem is in the Cox Network. Log into your cable modem and you will notice a ton of t3 and t4 errors. Run some trace routes when the problem persists and you will notice significant Jitter\Latency in the neighborhood of 300 to 500 ms. Luckily, I have a work associate who is also Cox Customer.  Performing a trace route only takes 5 hops and the amount of Jitter\Latency is staggering.  

I didn't write a reset works.  In the OP's case, however, from "...big issues..." > Sticky Note > "...fantastic connection."