it probably means the effects are not cored into the Grahpics card. this trend means the environment your developing in using that software is not a psuedo 3d environment like in final cut pro, where your actually edting on 2 polygons in an opengl environment, allowing you to tap into the power of the gpu.
this is how you get "REALTIME GUASSION BLUR in 1080iHDTV" and other nifty nifty realtime goodies.
having used premiere extensively before final cut, i highly doubt the rotorscoping and higher end effects in after effects and premiere are leaps and bounds above most serif products.
that said tho serifs photoplus5 and above wasa very stable package for image editing however once again photoshop depth charges it like a uboat in the atlantic.
If no-one gives your an answer to a question you have asked, consider:- Is your question clear.- Did you ask nicely.- Are you showing any effort to solve the problem yourself 