if you're running anything past AE CC 2012, the GPU won't help. Sorry.
We are using Adobe After Effects CC 2015. Our focus is to reduce render time and enhance performance without any lags when using Cinema 4D..
After Effects has never used the GPU for much, and it still doesn't. Improving rendering speeds is best done with better CPUs, more CPUs, more RAM, and multiple fast SSDs for footage and caches.
Dave, what changes do you think exist between After Effects CC (12.x) and the current version, After Effects CC 2015 (13.5), regarding the GPU?
The GPU features of AFter Effects have been somewhat consistent from CS6 until now:
There is one minor GPU feature that is disabled in After Effects CC 2015 (13.5.x) that will return in the next update later this year: the Hardware Accelerate Composition, Layer, and Footage Panels option.
That was a guess, Todd. Must've been "past CS6". That, and the Bad Old Days of Open GL still loom large in my mind.