AGK Studio, at least in my opinion is simply not in a state that it can be relied upon for a Professional Project.
On the whole it feels like a Windows 10 Insider (Fast Track) Build...
Most the "Enhancements" over AppGameKit v2 are not Feature Complete or Stable.
The IDE feels like it's still a very early build, with performance and stability issues (at least on Windows 10) … in-fact as I was using it yesterday before work, it just randomly lost the ability to do anything but run in Sandbox Mode until I rebooted it.
Then there's the UX that give it this constant "Amateur" feel, and if you're running AMD Hardware; I'd highly recommend Disabling "Event Based Rendering" and limiting the Framerate to 60Hz (and reducing your display to a 60Hz Refresh) otherwise you'll end up having your GPU running unbearably loud, reducing runtime performance and/or have poor input recognition.
There are some features that have been stripped from the Tier 1 Language (such-as 'Ref') which can be useful for Data Flow., and Tier 2 doesn't particularly play nice with the Latest Visual Studio (v16 / 2019) or Windows 10 SDKs for Tier 2. Oh and if you do use Tier 2, be warned the Help still refers to how things work in AppGameKit v2 including the Template Projects; so be prepared to need to spend time reverse engineering elements without any help on how they've changed.
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I'd personally recommend sticking with AppGameKit v2 for now, and revisiting the possibility of upgrading in 6 months.