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It's probably not at all using any of the extra cores and locking everything to the primary two cores - which is how it always has worked. You probably just didn't notice it because those Ryzen's have gianormous caches and only tend to offload stuff very late or never. One might say the processors own optimizations for efficient code execution get in teh way of software code. Short of manually controlling affinity via task manager or other tools I see no immediate fix, since even current compilers don't have any of that and clearly Adobe would have to issue a specific patch that makes provision for those new processors to begin with.
Thanks for your reply Millenium.
So you are saying there's nothing else I can do on my end?
Are you still facing trouble with our system? If not, let us know how you improved the situation. If so, please let us know so we can assist you further.
I know it's been a while and I apologize, I did not see your reply. But to answer your question, Yes, I am still having the same problem.
I didn't have to use my computer to work until now and I am having the same issues. After rendering with Media Encoder, After Effects becomes VERY unresponsive. I keep trying to RAM preview and I get the "Need 2 or more frames to playback" error.
Re-starting AE doesn't help. Rendering from AE or ME is VERY slow (CPU never goes over 30% and tends to stay on the low end). Even encoding an already encoded file to a smaller size from ME takes an unnecessary amount of time.
Any help you can provide will be greatly appreciated.