Fluid Interface Improvements
It's 2018 and everyone by this point is used to fluid smartphone interfaces that run at 30-60FPS and yet After Effects (and most of the adobe suite) can't scroll through layers at anything about 10 FPS to save it's life.
Try to scroll through a comp with 100+ layers and watch as the FPS of the panel drops to about 3FPS. I'm not sure why this is such a hard problem to fix.
The "Hardware Accelerate Composition, Layer, And Footage Panels" checkbox doesn't seem to help at all and sometimes even makes the problem work.
Other fluidity improvements:
- It would also be nice to have the animated scrolling abilities of Photoshop to select an infinite number of zoom levels instead of the hard, snapped comp zoom levels we have now.
Avinash Lobo commented
The UI performance has been atrocious for me ever since they did their rebuild. I have a GeForce 1080 Ti and a Core i7 7700K, and it's a daily source of frustration watching After Effects mumble its way through basic UI interactions like playback, jumping between keyframes, resizing panels, etc. The whole interface desperately needs an optimisation pass to get it a state where it doesn't feel like I'm running an Intel Iris graphic processor on a 486.
The performance of Shape Layers is even worse. I dread any project that has even a moderate amount of shape layers in it because things just to go pot.
Carlos Albarrán commented
Even more, if you have a 4k screen in Windows, After effects can't refresh the timeline window fast enough for realtime playback.