I was a fan of SugarCRM over a decade ago, that became SuiteCRM. I'm sure you can get similar results out of it, but the fundamental framework will just always be slower, and there's nothing anyone can do about that than use something else.

I wouldn't object to it being an option with Cloudron, to make it easier for more people to compare, I just don't know if that's justification enough for competing attention to build apps that do fill feature gaps.