I tried BBC's UHD - no thanks.

Actually first tried it out with The Capture a while back, and found it unwatchably dim. Hadn't tried it again 'til this week with A Good Girl's Guide To Murder, again too dim. But the clincher is trying it now on the World Cup - not only is it still too dim, but it's delayed by nearly half a minute from regular BBC.

I should ask as well - for the on demand shows like Good Girl's Guide, is there an option to NOT watch UHD, because I haven't found it.