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Don’t know how many people have seen this, here’s a presentation a couple of the AE devs gave in 2017 on porting to GPU, also gives some (very brief) explanation why multiprocessing was removed/isn’t supported: http://on-demand.gputechconf.com/gtc/2017/video/s7609-jamie-gjerde-porting-after-effects-to-the-gpu.mp4
(original)