Fuck me, the 4k is as shit as their '4k' streams. Their software should recognise when you have a quality speed & bandwidth & use it, the bit rate on this is fucking shite compared to uhd bluray remux, on my connection I could easily stream that quality, so annoying to know how much is missing.
Looks like an excellent 1080p broadcast image, even very close up, for the most part when the picture is moving, only in closer static images do you see any improved resolution.
The hdr is decent though, the BBC Wimbledon coverage in hdr was appalling.