If you have found a verified download (such as from community forums or mod sites like Nexus Mods ):
Ensure the file is not set to "Read Only" if you plan on changing your in-game settings afterward. Expert Tools for QVM Files
While it doesn't always store video resolutions (which are often in the registry or separate files), it acts as a bridge for how the game engine handles user settings.
Many players download replacement Config.qvm files as part of community patches like the Neonix Patch on PCGamingWiki to fix bugs like softlocks or mouse movement glitches. Why You Might Need to Download It
Some custom .qvm files come pre-modified to unlock all levels, though you can also do this by holding Left Ctrl + Left Shift + F9 at the main menu.
Always create a copy of your original Config.qvm before replacing it.