jacky007 wrote:
@JoeySmyth Yes, it’s already set to HD in my account settings, I’ve tried the automatic mode as well.

Personally, i would do an “Isolation Test” ie. disable everything in the house except the Modem/Router and the WDTV
If that yields no difference … resest your Modem/Router to Factory Defaults (and probably would’nt hurt to do the same to the WDTV)
Also, did this happen “Recently” or is this a problem from the start ?
Also again, what Firmware are you running ? (Setup > About will tell you)
Have you recently updated firmware ? if so, does rolling back firmware help
In closing … lots of questions and answers regarding you problem
can you provide as much detailed info as you can to maybe shed some light on the issue
(you never know, some small tid bit of info might spark another user’s experience and solution) 