Verify the integrity of the game files on Steam, Epic, GOG Galaxy, Ubisoft Connect, Battle.net, Origin, Rockstar Games Launcher by following this tutorial.

You should see the game begin validation of files—open Task Manager (Ctrl+Alt+Esc) and look at the Performance tab, and your network connection should show very little activity while your ...

Repeat this process on all your computers, so that whenever you start up the game—no matter what PC you're on—your game gets redirected to the files in your Dropbox folder.

However, what didn't change is the shortcut for it. The easiest way to open Nvidia In-Game Overlay on your PC is to use the keyboard shortcut Alt+Z to open it while in a game.