The Lighting Controller

In Version 7 (this did not happen in v6), when I go to another program like Chrome or even Notepad the DMX signal coming from V7 is intermittent. I have to stay in the software for the lights to stay on. This doesn't allow me to multi-task.
Please fix, thanks!

Which tab of the program are you referring about ?

Turns out it was a Mavericks Issue. I check the box "prevent app nap" and it fixed the issue. Thanks.