Cant sat that I have had any performance issues. the games been running great for my at 4K ultra settings.
I have had a few small glitches, that seems to be the norm right now. I had my partner walk into the door of an elevator and glitch through it. He also stood up in the car through the roof.
Also, the scene in the garage stealing the car, the cop cars just seemed to glitch in really fast, not really drive in. But that's been it so far, played around 6 hours so far.
The game has gotten a lot better the more I have leveled up and the more I get Cyber Implants. Scanning people in the streets is kind of fun and seeing who's a wanted criminal and beating the shit out of them.
The BrainDance investigating is some really kickass stuff. That is so cool how it works and you can investigate a scene. Gotta give CDPR props for that, very cool stuff.
Creator of the Neverwnter Nights Eye of the Beholder Series of Mods. http://www.moddb.com/mods/eye-of-the-beholder-ii-ledgend-of-darkmoon