iBeacon monitoring in background

I read that iOS7.1 was supposed to have fixed iBeacon monitoring in the background. I am seeing that it takes about 15 minutes for a monitored beacon to call the didExitRegion while in the background, regardless of what background capabilities I add. This makes it rather unusable for my scenario.

Is there any way to get more frequent updates? Short of that, are there any other ways to keep my app alive in background so that I get more frequent monitoring and possibly even ranging?