The most secure way to play the game is through official storefront launchers which handle updates and cloud saves:

The 7 Launcher acts as a bridge between past and present, allowing gamers to experience GTA Vice City exactly as they remember it—without the technical headaches of modern operating systems. By combining automated optimization with a user-friendly interface, it stands out as an excellent tool for both retro gaming veterans and newcomers eager to explore Tommy Vercetti’s empire for the first time.

Instead of forcing you to play at a choppy 30 FPS, optimized launchers utilize clever frame limiters that cap the game smoothly at 60 FPS while scaling the physics engine to prevent gameplay bugs. 4. Cleo and ASI Loader Support

Which of the game you own (Steam, retail CD, or the Definitive Edition)? What operating system you are currently running?