Multi-Core Support?

Hello, I'm new to this site and have a question:

I'm running CorelDraw Technical Suite X6 (x64) (SP2) under Windows 8.1(x64) on an Intel core i5 (4x core) platform.

At first I noticed that CorelDraw never used more than 25% of my CPU resources, but on closer inspection realized that it was running at 100%, but only on 1 of 4 cores.

All my other software (AVID MC, Adobe, MediaCoder, etc.) run with no problems on all 4 of my cores, yet no matter what I do I can't get Corel to run on more than 1 core.

Any ideas????????  Much thanks in advance!!