I use an Nvidia Shield with a GTX 1080 graphics card. The PC is wired to the router through a switch, the Shield is on 5GHz wifi, I use a wired controller. My router is an Archer C7. I feel like there's a slight but noticeable input lag when playing on TV and my framerates are a bit worse. For most games it's ok but for twitchy games, say, Furi or Dark Souls, it's annoying.

The Shield network troubleshooter tells me I have 1ms latency even on wifi but still, maybe it would be better wired. I have no easy way to run an ethernet cable to the TV.