Same here! I run a iMac (Retina 5K, 27-inch, Late 2015), 4 GHz Intel Core i7, 32 GB 1867 MHz DDR3, AMD Radeon R9 M395X 4096 MB, OS 10.14 .... Running Media Encoder, After Effects and Premiere at once means Media Encoder will take HOURS to encode short clips. If I close After Effects it will speed up to normal. Also, if After Effects compositions are in Premiere projects that slows everything down. It seems to have lost its multi tasking abilities in 2019 release. Looking at my CPU percentage it rarely goes over 100% no matter what I do. Its a 4 core CPU and this is not correct. Any one had the same? Any ideas to solve this?
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