Speed is not the only remaining issue: printing does not work, even basically. Only some fraction of a note is printed, and the top and bottom of this fraction have lines of text cut off vertically. It would seem EN is trying to print a note as an image, which, if true, would be mind-bogglingly incompetent.
Do not set up red herrings: no one is expecting "prettier" paperwork; just a basic print functionality. This is not rocket science: every piece of software on the planet can print except EN. It is like car not having glass in its windows: not its fundamental function, but pretty damned essential. If EN wants beta testers, they should either pay them or make the software free. Or do you want to pay for my account?
I hope you are being paid for defending the indefensible. If not, you should probably be asking yourself why you are so emotionally invested in EN that you are working for them for free as their shill.