Sky channels looks bad on new 4K tv

Posted 11th May 2021
I just bought a new tv (Sony A8 Oled) and when I tune into a SD channel on my sky+ HD box, the picture can be really blurry and blocky to the point where it’s unwatchable. I’ve tried different settings on both the sky box and the tv itself but no luck. I am using the latest hdmi 2.1 .
I never had this problem when using my old crt tv using a scart cable.
I know Sony has the one of the best upscaling and motion handling in the business so why am I experiencing this?
Is there a technique to make SD content more watchable?
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