I have two Cox (CT) 6416III recently upgraded to software 16.38.
Ever since then, I've been seeing serious stuttering on both boxes.

For example:

Watching an HD (or SD) show, picture freezes AND Audio cuts. If I rewind to play the scene again, there IS NO stutter (the disruptions are NOT recorded).

* I am using HDMI for video only, seperate optical cable for audio.
* Two completely different TV's and Receivers.
* I have reset the both boxes.
* Both boxes are less that 60% of capacity.

This is NOT an HDMI and/or TV/Receiver issue.
It does NOT appear to be a signal quality issue as it is NOT in the recorded segments that I notice the issues on.

What the heck is going on with these boxes and/or firmware???????

EDIT:
I rebooted the box AGAIN and went from a hiccup every 5-20 secs to none. However, I have done this before and it always starts again...