There is another inefficiency in the way DDC keys for animation sequences are calculated; this is for the same asset types, but it’s not really related to the issue described above. I’ve opened another PR to optimize this: https://github.com/EpicGames/UnrealEngine/pull/13362. On the same dataset, it reduces time spent on DDC key calculation from ~3.1s to ~0.7s (see attached screenshot).