Allows you to quickly switch your System Default OpenXR Runtime between existing ones (currently SteamVR, Oculus/Meta, ViveVR, Windows Mixed Reality & Varjo) if installed & custom ones, which you can add manually to the program.

I've made this because for example SteamVR only gives you the option to set it's Runtime as System Default OXR Runtime via the Developer Tab, when you've a Headset connected to it - which is/was annoying.

Let me know if you find any bugs or if you have any questions. Here in Issues tab, or via Discord: Taki7o7#0860

Also if you want me to add more Runtime "Presets".

• The presets try to automatically detect the programs with a runtime via the registry key, in order to make the detection work with different installation paths.
• The program does not check the validity of a runtimes json file!
• This program only changes the SYSTEM DEFAULT OpenXR Runtime, a Game could internally pick/require a/the non System Default one manually!
• The program needs administrator rights, in order to set the runtime registry key!
• Normally, it should automatically request Admin Rights. I've heard thats not the case for some people, most likely on Windows 11. Make sure it runs as administrator, otherwise you cannot actually switch the runtime (needs permission to edit the registry key for that)