Optik 4K receivers

[wireless]

Hello, I have 3 TV’s. One is 4K others are just HD. PVR on main floor 4K tv in the man cave. But the receiver down there will not play recordings of 4K tv.... why would that be the case? You also can’t rewind in 4K at least on the receiver. Biggest question is why recorded shows in 4K can’t be played on a receiver it says it must be played from the PVR. Thank you!!

More... (https://forum.telus.com/t5/Internet-TV-Home-Phone/Optik-4K-receivers/m-p/79169#M13934)