I haven't managed to get these working on my TV for the past two years. They've had massive input lag and stutters.
That was until a couple days ago I found some older reddit post about "disabling hw overlays" to fix input lag.
Did that in the android dev settings and they work perfectly now, but the issue is that everywhere else I've read that this setting shouldn't do anything and is only for debugging? So why does it work?
It also messes up the colors a bit, making them look slightly washed out.
Interesting. I can't make any informed response that will help you, but I've tried both Steam Link and Parsec on my (wired ethernet) Bravia tv and both were dogshit.