Any updates on this? Having the same trouble myself, whenever I’m trying to export or work in more than two of the Adobe CC programs at once or when I try to export a layered premiere sequence using AME i get the following message. (Notice activity monitor).

Simple sequences work ok sometimes. I may also try and break into chunks and export but this will kill my workflow for sure. I’m fine if it takes 10 hours to render as long as I can count on it to work.
I’ve contacted abobe and they said to move third-party plugins out of pref’s but still having trouble.
TIM
Model Name: Mac Pro
Model Identifier: MacPro6,1
Processor Name: 8-Core Intel Xeon E5
Processor Speed: 3 GHz
Number of Processors: 1
Total Number of Cores: 8
L2 Cache (per Core): 256 KB
L3 Cache: 25 MB
Memory: 64 GB
Boot ROM Version: MP61.0116.B16
SMC Version (system): 2.20f18
Illumination Version: 1.4a6