Hey ^^
What is the best way to stream from PC to a TV? I want to play some emulator games on it.
Not sure if 4K would even work, but 1080p with 60fps would be more than great. Also, latency should be as low as possible.
I use my TV as my main display for my desktop, it's much nicer to game and watch videos on a big screen, and streaming is never as good of an experience. So if you can, just grab a HDMI cable and plug your PC directly in.
That said, you don't even need a PC to run emulators. My Shield TV runs a lot of emulators well (Dolphin is quite playable and anything older is perfect) and these days a Chromecast with Google TV can probably run a lot of emulators on the cheap. Steam Link is also available on Google TV (and Moonlight if you want to go that route), but you wouldn't need to use them for emulating older consoles.
I tried several things, but the input delay is pretty hard and I can't get it fixed. What about this wireless HDMI adapters from Amazon? A cable is unfortunately no option.
Wireless HDMI adapters are usually junk for gaming, it's not what they're designed for. Decent ones also tend to be expensive. For the price of a decent HDMI adapter you could almost buy a Switch, hack it and run emulators on it, install Android and run Steam Link.
Also, if you can't run a cable, presumably the TV is in a different room than the PC. You will run into issues trying to use a wireless controller or keyboard and mouse connected to the PC at that distance, transmitting the video signal is not your only concern.
Steam Link on Google TV is a much cheaper option than wireless HDMI, and since the controller or kb&mouse connects directly to the Google TV device, you don't have to worry about the distance to the PC being an issue, as long as your wifi router is up to the task.