I think typically the problem with Ubisoft is dealing with their launcher. You can check individual games via ProtonDB e.g. Assassin's Creed IV: Black Flag: ht

I think typically the problem with Ubisoft is dealing with their launcher. You can check individual games via ProtonDB e.g. Assassin's Creed IV: Black Flag: https://protondb.com/app/242050 https://protondb.com/app/242050