After Effects (for those that don't know, it's a video editing program with a very heavily emphasis on special effects) is a slow piece of stuff.
On my graphics card, a game like Garry's Mod can handle 60fps at 1080p with a couple not-too-detailed props, a map, live lighting, some AA, and some particles (so long as they're not displacement effects), along with physics calculations, multiplayer connections, and who knows what else in the background.
After Effects can sometimes play videos at 24fps. Sometimes. And that is literally it's entire purpose.
I was trying to sync a sphere of particles up to audio and have it's particles disperse to the music. I had maybe a maximum of 50 particles on screen, and that was it. Nothing in the background, just the particles and some music. And trying to play it live at 720x480 resulted in around 5fps. I made a few tweaks - none of which should have made it significantly more intensive - and it literally froze my entire computer. I could not move my mouse or open task manager. It took a good couple minutes to get its stuff together and close, but not after freezing Google Chrome and forcing me to close it.
Adobe charges hundreds of dollars for this bullstuff. There is no excuse.
Sorry, had to get that off my chest. Anyone know of any good alternatives when I make the switch to Debian?