Hello to everyone,
I've an iMac 27'' with an AMD Radeon R9 M290 (2GB) GPU.
I use After Effects CC 14, but I can't use it with the GPU (It uses the CPU). How can I resolve the issue?
(Using the CPU isn't the better way to work with AE).
AE will never use this GPU for Raytrace 3D. That's just how it is. This stuff only works on nVidia GPUs.
After Effects uses the GPU for very little.
Your GPU will be used for all of the OpenGL GPU features. It just won't be used for the single CUDA feature: the obsolete ray-traced 3D renderer.
For details, see this page: