[catlikesshrimp]

I have used an old sony bravia tv to cast COD from an android phone. Every time I connected, latency varied from 100 - 200 ms to 10 seconds. I had to reconnect several times until the latency was satisfactory.

Conclusion: it has been technically possible to cast to a tv for some years.

[genewitch]

yes, miracast/screencast whatever was a thing prior to the Steam Link being released in November of 2015 (9 years and some change ago). some of the current devices can actually do sub-100ms of input latency, but you can't be in the same room as the source device or you'll go crazy. The roku stand-alone have the worst network and input latency, they're unusable for anything other than presentations.

firestick was <100ms network and barely noticeable input latency (on the order of ~20ms so interframe lag at 60fps). steam link is link latency + some small constant - whatever the "frameserver" processing takes, call it 3ms but definitely <10ms - and that's both network and input.

when i said network i meant both the network and the actual refresh of the screen. watching a movie is one thing, but pushing "Y" and your character jumping should be "as instant as practicable" and steam link is the only one that is that that i've used, so far.