Install After Effects on a powerful home or cloud workstation (e.g., AWS EC2 G4 instance or Paperspace). Then access it from any laptop, tablet, or even phone. This is truly portable, fully legal, and you get full GPU acceleration.
Adobe After Effects CC 2019 (v16.1.3): The Power of Professional Motion Graphics in a Portable Package Adobe After Effects CC 2019 16.1.3.5 X64 Portable