Sorry, but After Effects doesn't even use the GPU. Thus, you can't optimize its performance.
Adobe has abandoned GPU accelleration in favor of the even-better C4D Lite.
- As After Effects uses the video card?
- Texture Memory can be increased for better performance?
- CUDA Cores are used only for Ray-Traced 3D?
- It is more important to have a good CPU and RAM memory, than a good video card?
- My configuration is:
OS Name Microsoft Windows 8.1 Pro System Type x64-based PC Processor Intel(R) Core(TM) i5-4690 CPU @ 3.50GHz, 3501 Mhz, 4 Core(s), 4 Logical Processor(s) Installed Physical Memory (RAM) 8.00 GB Total Physical Memory 7.94 GB Total Virtual Memory 12.6 GB Available Virtual Memory 3.39 GB
The ray-traced renderer is considered obsolete and is not going to see any further development. As Dave says, it would serve you better to learn the new, more robust tool (Cinema 4D Lite which comes free as part of CC and CC 2014 installs) and ignore the outmoded and soon-to-be-removed old technology (ray-traced renderer).
That being said, the ray-traced renderer will be significantly sped up on the GPU vs. the CPU. As to what settings work best, test them and find out!