When using OzRunways make sure you have shut down all the other programmes. Even though they are asleep in the background some, use a lot more resources than others.
To do this, "Double Click" the button and a row of open apps will appear on the bottom of the screen. Press and hold on any one of these apps and a little red circle with a - sign appears over each app icon. ap the red dot on each one and it will be closed down. Some folk I have seen have had dozens open and it seems to slow down the high resource users like mapping apps.
Cheers
