Splitscreen 1.5 is available now

-New Display Settings preset (low, medium, high and custom) which will help you create a more stable experience. If you're having issues, try starting on the low preset and move up from there.
-“Arrange Displays" screen when you connect so you can position your Splitscreen window relative to your Mac
-Restart your 30 minute trial after it's completed if you want to try Splitscreen a bit longer

https://apps.apple.com/us/app/splitscreen-multi-display/id6478007837

‎Splitscreen - Multi Display

‎Splitscreen lets your share an extra Mac display to your Apple Vision Pro.  Expand your virtual Mac displays to support more than one display and improve your productivity while working on Apple Vision Pro. Work with multiple documents at the same time, or multitask between different apps. Increas…

App Store