My old setup was a 10yr old 1080p set (52XBR4) to which I used in tandem with a Nexus Player for streaming and Chromecasting purposes.

I recently upgraded to a new 4K set (65x900E) with AndroidTV. I never really gave it much thought and continued to use the Nexus Player for Chromecasting (specifically NBA League Pass). Last night for the heck of it I decided cast League Pass to the 65x900E.

Wow what a difference. Much better framerate and sharper detail on the Chromecasting through the TV instead of the Nexus Player.

Can someone tell me as to WHY this makes a difference??

I figure the TV is upconverting the 1080p signal either from the Nexus Player cast or the internal casting. So is it because the Nexus Player is just older technology and the TV is capable of outputting a much higher quality stream?

(I also used the same video profile for both sources on the TV. So its using the same feature set on both signals)