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Participant
August 14, 2025
Open for Voting

Preview becomes very slow when going to upper hierarchy levels

  • August 14, 2025
  • 1 reply
  • 111 views

I'm using a project that makes heavy use of expressions. Even though I'm not applying any particular effects or processing, the performance becomes very slow when I go to the upper hierarchy levels. I'm attaching the project file. The compositions become progressively slower in this order: "ALL" → "ALL_Filter" → "ALL_SplitCut".

This appears to be a bug report or support request describing performance issues with nested compositions in an After Effects project that uses many expressions.

 

https://www.dropbox.com/scl/fi/8k7hn749yq7zhnr27u28t/very-heavy-project.aep?rlkey=0fiyomjdzubpwe9cos2h5dfby&dl=0

1 reply

Community Expert
August 15, 2025

Please give us video and system specs.