Mine 920T but i stopped cable (SCV & Sinktel) and am using a 4k Android Setop Minix Neo 8H Plus which upscales all content to 2160P
No judder issues but the screen is prone to reflection.
The upscaling for the 8Hplus and the 920T is very good so even 480p streamed looks ok. On Kodi Phoenix, 1080p movies looks damm stunning when upscaled to 2160P.
Dont use the SCV and Sinktel settop boxes la bro. The default resolution is not even FHD and is only 1080i. The contents will be DOWNSCALED on your 920T to 1080i. And you pay a kings ransom for free content that is readily available on android settop. Its a waste of a good Oled 4k.
Get a good 4k Android settop box la so everything is upscaled to 2160P. People will tell u its "just upscaled" and not real UHD but untill Hollywood starts producing native 4k movies, we have to rely on the upscaling and it works.
Is yours also 920t
Do you have judder problems. And any settings to solve this. Fiddle until pek chek. Espcially on cable broadcast