I have been using Designer for over a year, everything works perfectly.
Today I got the update to AD 1.4 and also decided to test AP.
I have some lag using zoom, all levels. Something very annoying.
I do not know if this is a problem of performance. I tried to change the preferences and nothing happened, the problem remains.
In Photo the performance is terrible.
MacBook Pro 13" retina - late 2013
cpu: i5 2,4GHz
Intel Iris 1536MB
OS X: 10.11.2
A.Photo 1.4 (trial)