Meh it's a tough one. It's one of those games that if it was released without fanfare people would have went "it's not bad" and got on with their lives.
Because of the hype, it's "awful".
For me it's basically Watch Dogs again. Watch Dogs wasn't a terrible game, but it wasn't a good one either. Cyberpunk is the same - a 6/10 type of thing. It has badly immersion breaking issues all over the shop, it's mechanically a mess but you can still have some fun with it.
At £18, it's an acceptable buy as long as you don't expect too much. But with a sub-par machine it's probably not. And it's still pretty much a broken game - personally I'd be waiting another six months or so and seeing if you can get it in a bundle or something.