After 14 hours spent in the game I finished the prologue. I'm playing on GeForce Now (bought a subscription for a month). Usually game starts quickly, but from time to time one has to wait in a queue. One time it took very long, but changing server in settings helped. There's some video compression, but it's not bad. Chroma subsampling makes small menu fonts a little less sharp.
I haven't got any crashes or show stoppers so far. There are glitches in this game for sure, mostly visual like missing animations. It can spoil the experience a little bit. I saw a major character play idle animation after they where killed. Kinda creepy. Or a character failing to holster weapon during cut scene resulting in him holding multiple objects in the hand. There's plenty of movable objects in the game, which is great. Problem is there are stacks of objects that sometimes will shake or even explode when player enters the area and physics kick in. Sometimes objects break a bit to quickly when player or an NPC push them. I saw cars trash into stuff making objects fly over the place.
Cyberpunk has almost identical structure as Witcher 3. You have monster contracts (here it's contracts for cyberpsychos), you have bandit camps (here it's gangs). Looting is the same as Witcher which can brake the immersion a little bit. Realistic graphics and first person perspective are very immersive, just walking around gives me this unsettling feeling of being lost in a big city. But the world is littered with randomized loot. There are futuristic high tech containers in the middle of the busy street, you open it and you find one guitar pick. There are health boosters everywhere. You quickly end up with dozens of machine guns and pistols which you can dismantle on the fly for crafting components. I have to fight myself to not to pick up every ashtray and soda can. It's very gamey just like Witcher, just here it may be a little bit more jarring then in a tpp fantasy game.
So far quests can be finished in multiple ways. I had very different outcomes to missions they showed in previews. I try to play stealthily, which takes longer. You can't pick up and throw objects, but you can distract enemies by hacking different devices. Game doesn't have separate nonlethal weapons but it has nonlethal weapon mods, which I haven't tried yet. You sneak by crouching. There's no leaning, except when you aim with a gun from behind the cover you will lean automatically. Enemies aren't very forgiving, they spot you pretty quickly at least on hard difficulty and when you alert one guard whole base is alerted.
So far it's been addictive, but I think I would advice to wait. They said there will be another hotfix this week and bigger patches in January and February. The game needs polishing for sure.