Impressive that the move to Apple Silicon unlocks so much performance in After Effects, but boy it's still clearly a single-threaded (or CPU-only) application for a lot of tasks, because the scaling between the M1 Pro and M1 Max is limited. The M1 Ultra is even worse scaling, that's the really surprising one to me. You'd think at this point more plugins/operations would be rearchitected to take advantage of multi-core CPUs and GPUs.
It'd be nice to see more comprehensive AE benchmarks that cover more operations to see which areas are more or less optimized. The M1 Ultra has the potential for amazing performance but it seems like there's still a surprising number of tasks, 15 years into the multi-core–dominant era, that still can't effectively take advantage of the resources on offer.