Duet Display 2 uses hardware acceleration to catch up with Luna Display

Duet Display is an app that lets you turn your iPad into a second Mac monitor. And the team behind it just released a major update that makes it much more efficient — it consumes less CPU resources and is now recognized as a true external display.
If you’ve used Duet Displayover the past few years, you may have seen a change that made it worse, not better. At some point, Apple updated macOS and broke Duet Display’s method.
Duet Display had to use AirPlay as a fallback method. I