Use ProtonDB to search for user reports next time, no one likes to have the sub flooded with stuff you can easily find out with a Duckduckgo search or whatever.

Came here to finally read an answer. But it was just another question instead.

That said, no, GTA is totally not worth it on any OS. But why do you care for my opinion?

Hint: ask better questions

It works amazingly well for me. A few months ago, the launcher broke, but was fixed after about a week. Since then, it’s been working well, apart from a few graphical quirks. Also, you should definitely disable the Steam overlay!