Dear Adobe After Effects team, I have a problem for months now and it drives me crazy.
I also tried a lot of things, different settings, more/faster RAM and a M.2 SSD.
I have these specs and I build my PC as an Adobe AE workstation but I paid thousands of euros for nothing!
When I want to work in AE, AE uses only one core and that is a huge bottleneck in my system. I have 6 cores with 12 threaths, it is one of the fasted consumer CPUs!
- i7 5820K (OC @4,2GHz)
- Samsung 950 Pro 256 M.2 SSD (2,5 GB/s)
- GTX 980 Ti
- Asus X99-A
- 32GB DDR4 RAM
Here is a screenshot! (http://i.imgur.com/hOM7otY.png)
Here's the fix, although you may not think much of it:
Download and install AE CC 2014. Use it to render your AE CC 2015 projects. AE CC 2014 supports multiprocessing, and it will open AE CC 2015 project files.
That's the best Adobe can do at the moment.
Dave's suggestion is a good one. I use CC 2015 to work as it is much snappier and then I open my projects in CC 2014 to make use of multiprocessing when it comes time to render.
Here's a short explanation of what's going on.
AE CC 2015 is the first step in a major re-architecture, separating the renderer from the UI for the first time in AE's 20+ year history. It's a necessary step for improving After Effects performance, but it's taking a while (and multiple versions) for them to get through it. So, during this time of transition as they're introducing elements of the new architecture, sometimes it may be easier to use the older version to get certain things done. Multiprocessing is one of the features not available in After Effects CC 2015 (13.7)
If you don't have CC 2014 installed, your CC subscription includes it: How To Find And Install Previous Version Of Adobe Apps In CC 2015