You can set this in the Advanced section. So if there is 1.5 GB of memory in the computer, set it to 750. Top For Starters Make sure you have enough disk space to hold the modified frames of your clips. Since Commotion may cache images to disk so make sure you have disk space and configure scratch disk preferences accordingly. Save rendered files to different files than ones already in the project.
Commotion works more efficiently when memory is available.
Documentation is your friend. Check electronic and printed documentation for helpful details. Check our web site occasionally for update information, patches, and general news. Make sure you register Commotion so you will be notified when there are updates or special offers. Top Commotion 3.1 does not support QuickTime 5 on Windows.