buggy and slow

The Air Display app is *not* required on the *main* computer. It is necessary on the *remote* system. This app is useless if you want to extend your Mac desktop to Windows or iOS.

Even over gigabit ethernet, the performance is sluggish. I found it unusable at retina resolutions.

Only certain resolutions work correctly. For example, I cannot use my 1600x900 Windows 10 system as a monitor for my Mac at the native resolution.

Nick N (42) about Air Display®, v2.0