Personally I’ve been streaming with moonlight/sunshine onto my steam deck instead of Steam’s remote play. It’s higher quality, lower latency, and it handles non-steam games. There’s even a DeckyLoader plugin to make game tiles to make the streaming option look more integrated.

A couple of things to note if you go down that route:

• Youtube guides on setting up sunshine on windows are a few months out of date, you’ll need to do some remajiggering to get it working

• Sunshine needs you to add a script to launch from a desktop shortcut if you want to boot in directly from the Steam Deck. Steam makes it easy to create desktop shortcuts, and you can toss them into a desktop folder specifically for said shortcuts to make it easier and clean.

For your other questions, I’m not familiar with any way to remotely u lock your PC. Uou can set it up to not require a logic on waking up from sleep though. Also, when you stream the game doesn’t automatically shut down, regardless if you’re using Steam’s Remote Play or Moonlight/Sunshine. Make sure to shut down your game before disconnecting.