Premiere CC extremely slow on export

I just started testing the new premiere CC as a replacement for the Pro5.5.

Most of my clips are AVCHD from the dreadful Panasonic 130 / 160 cams.

Although the new premiere works well as far as handling these clips (surely better then CS6 with the BUG) , when I try to export to mpg2 DVD … well …. Trees grow faster.

For some reason the premiere cs5.5 does it faster, way faster than the CC.

The CUDA engine is active in both cases, but has no visible effect on speed.

The computer I am using has the I7 6 cores dual threads, 32 GB memory, SSD for system disk and GTX570 for GPU…  SO WHY?