Just thought I would update from my experience so far, when I purchased my new G4 I was gutted that when I watch HDR programmes via the Sky Q box I suffered bad pixelation and greening of the screen when using Netflix, Amazon, Apple etc.
I even returned my G4 as when speaking to LG then said this maybe a defect with it and a replacement was sent. But same issues and was gutted.
After reading this thread, I called Sky, explained clearly what my issue was, told them my box details and the chap on the phone said my box was not HDR compatible as it was an old version. He sent me a new Sky Q box with the external power brick and I set it up.
Yes, I lost some of my recordings, but nearly all of those are available on On Demand or on other apps. I was actually glad as my planner was reset, so no annoying reality shows were there to be recorded which upset my partner but made me chuckle delightfully inside.
Once set up and with bated breath rested it watching as many HDR films, programmes as I could.
Over 2 weeks later, I still have no pixelation or greening and able to enjoy my G4 and programmes in HDR 👍
My expierence was good and Sky sorted it in 3 days from when I rang them, so it is puzzling so many say they have had multiple calls with Sky, engineers turn up and it still hasn't helped them.
i had no engineer turn up, and only one call to sky and new box posted out to me and arrived within 3 days,
LG G4
Sky Q (HDR) + 2 mini
Virgin Broadband