Your macOS is too old. Upgrade to Sierra (10.12) or High Sierra (10.13). Or use a patched installer (DosDude1’s patcher for unsupported Macs).
After Effects → Preferences → Memory & Multiprocessing → Reserve less RAM for other apps (e.g., set to 12 GB for 16 GB system).
To run After Effects CC 2017 smoothly, your Mac should meet these original specifications:
Adobe After Effects CC 2017 is a powerful motion graphics and visual effects software that is widely used in the film, television, and advertising industries. If you're a Mac user looking to download and install Adobe After Effects CC 2017, here's a step-by-step guide to help you get started:
Check compatibility before installing:
