iReal Pro and Focusrite 2i4 playback Stutter

iReal Pro will not playback properly through Focusrite 2i4 Interface when connected to iPad Model A1403 running iOS 7.0.4. The playback stutters and cuts in and out. It will play fine through the iPad speaker or headphone output jack. Other apps such as GarageBand and Auria work fine using the Focusrite device. Tried using Audiobus with Auria as the output app, but have the same issue.
Tried for help with iReal directly, but they had no solutions and suggested I post here. Any ideas out there?

Thank for information.

http://www.bediro.com/images/3/w1.png