Firstly I think it's V6 box. Cleverly there's no markings on the front or on the spec. Excellent start!
So whenever we watch catch-up it seems to jump and pixelates. Really annoying.
V6 or Tivo?
TV - make/model (4K?)?Hub model ?Have you tried a new high spec HDMI cable?If a V6 - how is it connected to the Hub - ethernet or wifi?