[Brian Johnson]

My issue was hyperthreading. My desktop is an i5 3570k but doesnt have hyperthreading. It was using 90%+ cpu usage almost nonstop while encoding. I have 2 core i7 laptops that were only using 19% CPU and taking 41 hours to render the same video my desktop was doing in 9 hours. I could not disable hyperthreading in the bios on the laptops. I have 2 friends that have 6 core intel CPUs with hyperthreading. I tried rendering on their desktops and had the same issue with cpu usage being below 20%. I then disabled hyperthreading and got the cpu usage to 80%+ nonstop. I was using Premiere Pro CC 2015 to do all of these tests. Before figuring out the issue I tried using CC 2017 as well as adobe media encoder and I still had the 19% cpu usage issue. Disabling hyperthreading fixed the problem for me.