Hi, I am reacting on this post. Early backer of Spriter but late user, I just started to use it.
I must say that although the soft is really great on PC (I would like to congrat the authors for this fantastic tool), on Mac it's really a disaster in terms of user interface reactivity and performances. It should not be distributed in my opinion: too much to fix. In its current state it's impossible to use it on Mac in a professional way. When you animate it's really important to work and edit fast and preview your animation at a descent pace, close to the final use.
FYI, I own a Mac Book Pro, 2,4 ghz, Intel Core i7, 16go, Nvidia GT 650m. No matter if I disable the Open GL mode, when I use Spriter on my 6 years old crappy PC, it works ten times smoother and faster than on my Mac (actually the perfs are great even on this old PC). So there is really a gap here I think.
Do you have any plans to improve the Mac version significantly ?