I'm using a Synology RT2600AC router at home and a hard-wired CAT5 cable to my STB. I receive ALL my terrestrial and BTTV HD / extra channels without a problem but recently I've noticed that I get IPC6023 on only Discovery HD and Good Food HD. I've tried all the usual stuff like resetting router & STB etc but I find it strange that only these two channels have the IPC6023 issue. Any ideas? Should I contact a mod in case something at BT's end has changed?