My sportsnet 4k channels are about 20 seconds behind the sportsnet hd channel, on the same pvr!  I have seen alot of answers here blaming the provider of the content, service path latency yada yada yada. This cannot be the case here as the lag is blatantly bad on tbe same box, I can literally watch a goal scored on the hd channel live, change to the same channsl in 4k and voila! I can see the same goal again "live"