Sandboxie is pretty great. This is how I've managed to multibox Elite: Dangerous ever since Frontier changed how they issue game keys in 2019. I can have multiple versions of Steam and multiple versions of the game running side by side. The only thing that can get a little wonky is the Steam Controller, with both the desktop and game-specific bindings getting activated simultaneously in some cases.
I would never use it for security-sensitive process isolation, like malware analysis. It's safer to use a dedicated computer or virtual machine for that sort of thing. But for gaming? chef's kiss
I would never use it for security-sensitive process isolation, like malware analysis. It's safer to use a dedicated computer or virtual machine for that sort of thing. But for gaming? chef's kiss