Issues with Real-time Playback?

Hello,
I am working on an animated film and I am having trouble getting my footage to playback real time in Premiere 6. It is making it impossible to edit.
It plays choppy. Will stop on a frame. Doesn't catch up on the edits.
Here are my computer Specs:
MacBook Pro
2.5 ghz intel core i7
8 gb mhx DDR3
AMD Radeon HD 6770M 1024 MB
OSX Lion 10.7.5
Sequence Specs:
24 fps
1980x1080
spuare pixels
progressive scan
24fps timecode
48000HZ
Footage Specs
24 fps
1980x1080
h.264
file size between 2MB - 300KB
Sequence length 4:18
I have trolled all of the forums to see if there was anything to change to no avail:
I tried both setting the Project set to MPE with GPU amd MPE with software. No difference either way.
Playback resolution is at 1/4
I've closed all applications.
Optimized my drive.
Restarted.
Updated to 6.0.2
Anyone have similar issues? Any ideas on my set-up?
Thanks,
sasha

I am sorry. I actually posted other questions here and I have always put my
computer info at the end of my questions. Yesterday I was browsing around
and I noticed that under the profile you created a specific place for the
computer info. So I thought that perhaps it would be the proper way to do
it . Apparently I did the vwrong thing. Also to ask a question on the web
is something that we all do without thinking anymore. Everything is free
and we take everything for granted with no intention whatsovere to take
advantage of anyone and neither did I in this instance. My apologies. I
will follow up with my computer specifications tonight when I get home from
work. Thank you.

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