For context I played through the base game at the end of last year and pretty much speedran all the main and side content available.

1) Yes. Alot of the bugs and issues at launch have been ironed out. Game feels very playable now.

2) Isn't repetetive. Alot of builds you can choose between (e.g. hacker, brawler, slow-mo samurai etc). You can switch up how you play anytime. Content wise, gigs are repetitive whilst side-jobs/quests are more fleshed out and unique.

3) Not similar at all. Yes there are cars and shooting but cyberpunk has alot more gameplay elements and playstyles in my opinion.

4) Should be fine. Definitely will have to dial back the settings a lil bit.