Just a few basic questions:
- What hardware
- What software
- What codec
- What project seetings
- What OS
- What are you doing
- How did you measure
- What drivers
- What tuning was applied
- What services are running
- What processes are running
- Any third party cards installed
Once you have answered these, maybe we can give you some hints.
Windows 7 Enterprise Service Pack 1
Intel(R) Core(TM) i7-2600 CPU @ 3.4GHz
8 GB RAM
Adobe Creative Cloud 6.03
Using Adobe Premiere Pro
Drivers for Nvidia GeForce GTX 570 Version 220.127.116.117
Same PC runnuing the same harware. Only difference is upgraded from Master Collection Suite CS5.5 to Creative Cloud 6.
Mercury Playback Engine GPU Acceleration (CUDA) enabled.
Exporting to H.264, Vimeo HD 720p 29.97
Render at Maximum Depth un checked.
I have changed the Memory from Performance to Memory and that reduced my CPU usage but the GPU did not increase.
Keep memory to Performance.
The GPU only comes into play during exporting when there is scaling, blending, blurring, etc. going on. The major role is CPU based. Seeing 100% CPU load should make you happy, because it means that your disk setup is not a bottleneck.
What is going on? Well, from my understanding the memory management between CS5/5.5 and CS6 has changed significantly, by using interprocess memory in a completely different way. Changing memory from Performance to Memory priority changes the use of interprocess memory and that has negative effects on performance with H.264 material.
This is only my interpretation of what is going on and I may be mistaken, so Adobe, please correct me if I'm wrong.