I'm currently exporting a 90 second video (using the Vimeo HD 1080p preset), and it is taking about 30 minutes. This is extremely strange as I have an i7-990x OC'ed @4.5, 12GB RAM, SSD, etc.
I looked at Performance tab in Windows Task Manager, and saw 4 threads were not being used at all, only 20-25% of the CPU was in use, and only 6GB out of the 9GB I specified was being used.
Why isn't Media Encoder making full use of my CPU and RAM?