I'm having the same issue and it started about 2 weeks ago. I've tried all the cable connection tips had a Comcast technician come to my house replace the TV box and still see the same issue. The technician acknowledged there is an issue with the Netflix app but it doesn't seem to be consistent in all regions. I'm in Napa and have this issue. If I use my Blu-ray player to launch the Netflix app I do not have any stuttering issues.
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