New version looks great. Spins a lot of CPU when idle though, I don't know if you can do anything about that with Unity as a base though. It'd be nice to have a rectangle select to select everything at once for scaling.
Still looking into more optimizations however Asset Forge isn't the lightest program and it's running a full, realtime 3D engine so it might just take up more resources than other applications would. Good features suggestion, I've added it to the to-do list.
Currently Asset Forge is on 2018, that is the LTS version of Unity that's recommended for releases since it contains the least bugs. Once 2019 is available as LTS version I'll upgrade.
