Hi. I have just started watching the second season of The Grand Tour on Amazon Prime. It only seems to be available in 1080p and not in 4K. I have asked Amazon to see if there was an issue at their end and the said everything is okay from their systems. My set is KD55XD8005. I watched the first season in 4K no problem. Not sure where the problem lies, the hardware or the streaming from Amazon. Anyone else experienced such issue(s)?

Thanks

Manny