What’s the easiest way to play my PC games on the living room TV?

If you can run a cable between the rooms, a long HDMI cable is the straightforward option. It sends the picture directly rather than encoding and streaming it, so there’s no streaming-related input delay or image compression. For a long run, check that the cable supports the TV’s resolution and refresh rate. Fiber-optic HDMI can be useful over greater distances, but costs more.

You’ll also need a way to connect USB devices or controllers if they’re staying by the TV. A USB extender may cover that, depending on the distance.

For a setup without new cables, try streaming first. Sunshine on the PC and Moonlight on a compatible TV, streaming box, or small computer are a flexible combination. Steam’s own streaming option is another place to start, especially if you want fewer setup steps.

Connect the PC and receiving device to Ethernet if you can. Wi-Fi may be fine, but wiring both ends gives you a better starting point for judging latency and picture quality. Pair the controller with the device by the TV, and test the games you actually play.