There’s a small bit significant new feature coming to Adobe After Effects. It’s currently available in the latest After Effects Beta and I expect it’ll be coming to the final release once it’s all ready. Essentially, it lets you see exactly how much each layer in your composition affects your render time.
This is a pretty massive feature, as it’s often difficult to figure out exactly which part of your composition might be slowing everything down without manually checking each layer on and off in turn. Now, the new feature shows your entire render frame time with each layer broken down individually, allowing you to easily pinpoint layers you can optimise.