I’m having the same exact issue. And it really only started happening recently.
Specs:
Windows 10 64 Bit
4x4GB DDR4 RAM
Core i7-5820k @3.30GHZ
Nvidia GTX 560 OC
250GB SSD for Cache and Software
I am using a H.264 Codec at 1920x1080p at 60fps
My bitrate is 10 and my target is 12 at VBR 1 Pass
However coding used to only take an hour at most for my medium quality animations. Not they take several hours and on top of that MY CC suite for both Premier Pro and After Effects slowed down heavily. It takes 10-20 seconds just for a frame to load or a thumbnail to refresh.
If anyone has any idea I would appreciate the advice.
Thanks.