My brother and a friend built his computer and couldn’t figure this out. He called me a couple days later to vent some frustration and I said exactly the same thing.
“I know this is a stupid question, but is your Dport plugged into the mobo or the dedicated graphics card?”
“…”
🤦♂️
I’m sure you’re probably aware, but the Heroic Game Launcher has compatibility built in to install and launch both Gog and Epic games. Makes it almost as easy as steam to set up and get going. I can’t speak to any multiplayer/FPS games with anti-cheat shit though, probably SOL there