I'm a long time Revit user just starting to look at ArchiCAD because Revit is so frustrating. Don't think that the grass is greener on the other side. It might look it but it is just astroturf, not even real grass 😉
Anyway, Revit's current multi-monitor support is rudimentary at best. Yes you can drag tabs out onto a second screen but they don't really behave like real windows. Also tabbed views are a real mess. For example, when you have multiple projects open there is no visual distinction between the tabs. It gets really crowded and messy very quickly. The tiled view is not all that useful unless you have a high DPI monitor, otherwise you just see less of more. Not very useful.
In my mind multi-monitor support is a no brainer but it needs to implemented well. Look towards apps like Adobe's Creative Suite to see how they manage multiple windows. In particular how they support tabbed vs separate windows. Most importantly once tabs are dragged / separated into individual windows it is important that they behave like the native OS's windows and not something weird with strange decorations, buttons, etc.
Pushing the boundaries of local time/space continuum since 1972.
Archicad 26 | iMac (Retina 5K, 27-inch, 2017) | 4.2 GHz Quad-Core Intel Core i7 | 24 GB | Radeon Pro 580 8 GB | macOS 12.6