Fresh issues in fresh 25.4.0 release

Sounds good, I'll be around if you post back.

And to be clear, I wasn't suggesting you clear the cache to increase performance, it was so the Composition Profiler gives you an accurate read for how long it takes to render a single frame. If you have cached layers, the number it reports doesn't tell you how long it took to render the frame from scratch. 

Too often people clear the cache as a performance issue, and while it can definitely fix issues, it can also slow things down even more. With the introduction of High Performance Preview Playback this year, we can now leverage your disk cache in a way that wasn't possible before. This means that more layers can get cached and offloaded to disk, then pulled back into RAM when you need them, i.e. previews can be significantly faster and longer. Clearing the cache wipes out this benefit.

Thanks,
- David, After Effects Engineering Team

Thanks too. I rarely think to use the Composition Profiler. It's a good idea.

As for the comparison between Ae24 and Ae25, since I have to work on a different project, I will start in Ae25 and I will compare the rendering times between Ae25 and Ae24 if I need to return to Ae24 again, and I'll send it here.

However, clearing the cache is not enough in my case. Only restarting AeFx solves the problem.

8^)

Thanks for that info. I see from the Composition Profiler at the bottom that you have a particularly heavy frame rendering time. If you show the Render Time column in the Timeline, you can start to profile which comp, layer, or effects are contributing to your render times. Check out this article to read how the feature works: https://helpx.adobe.com/after-effects/using/composition-profiler.html

If you reveal this column, purge the cache and then render a clean frame, do the times differ much between AE 24 and AE 25? In this case, purging the cache is necessary because that render time takes cached layers into account.

Also, are you able to collect and send this project to me? If so, it wouldn't be shared outside of the AE team, but it could help us troubleshoot the issue.

Thanks,
- David, After Effects Engineering Team

Hi @David.Arbor ,

you're welcome (but it's also in my interest ;^).

• Yep, any of the 3 projects I worked for this last week (but they are very similar).
• Only in 2D (with no motion blur except a light CC Force Motion Blur used only when rendering).
• Without any third-party tools (except for a few scripts used from time to time to facilitate keyframing).

info: I was able to easily make copies of my projects to open them in version 2024 of AeFx (24.6.8), in which the refresh rate is correct and stable over time (and I even have the impression that the rendering times are faster).

8^)