Median Filter no longer accelerated in AFX 25.3.0. (build 71) on Mac OS 15.5 apple Arm M3

We've identified the cause of the issue. It is related to some updates we took from the Photoshop team that are missing some of the acceleration functionality used by Median and a few other effects. We are working on a fix and hope to have something available in the near future. In the mean time, if you are affected by the slow down, please roll back to AE 25.2.2. 

We just purchased a Mac studio (M3 Ultra 32 core 256gb) as a secondary render machine, but the render times are so slow, or it just hangs. The current project im trying to render is aprox 6k resolution with a few effects etc. but nothing crazy.

The Mac studio current render time suggests 243 hours! our 2 year old pc rendered it in 9hrs. This is obviously not aceptable. I've tried just about everything but open to any suggestions.

Thank you for the report. We have identified the issue and are working towards a fix. Unfortunately it is part of some shared technology in Adobe that After Effects utilizes so we are working to correct the issue. That may take a couple of weeks. Once the fix is available in Beta and non-Beta builds, we'll post back here so you can try out the fix. 

In the mean time, if this is critical, you could install 25.2.2 (available in Other Versions in CCD) which does not have the problem. 

Changing thread status to Investigating.

Best,

Nishu

what app?