PerformWithDelay timer seems to be lagging on simulator when it is not in focus

Hi, I am working on a game that uses timer event (performWithDelay) every second. When I am using simulator on Mac Os X and when simulator window is not in focus timer seems to be lagging or stops. But when window is back in focus timer seems to continue. Is this a known issue?

Thanks

timer.performWithDelay pauses when suspended. This is by design.

Rob

timer.performWithDelay pauses when suspended. This is by design.

Rob