11 votesNeeds More Info · AdminVictoria Nece (Sr. Product Manager, Motion Graphics and VFX, Adobe DVA) responded
The latest (November 2019) release of After Effects includes major improvements to our preview architecture. You should see reliable, real-time playback of cached frames. Give it a try, and let us know how it’s working for you.
An error occurred while saving the commentStéphane Augé commented
same issue here