It will work just fine with lower specs but it is possible that you can't open all the levels if your specs are too low. You need to have the game (Divinity: Original Sin) installed in order to use the editor.ĨGB and a 64bit OS is advised to use the editor. You can find the editor called 'The Divinity Engine' under 'Library -> Tools' in your steam client.
This guide will explain how to setup the editor for Divinity: Original Sin.