FSX Problem With Tucson?

[Dougx]

When I fly out of Davis Monthan, KDMA from default runway and maintaining heading, sim and computer locks up completlly. This happens about half way over Tucson. Any a/c default or addon, I have no scenery addons. This problem will also occur with a straight approach over Tucson to same runway. Anyone experienced this? It is not a big deal but I am very curious what is causing this and is a fix possible? Thanks, Doug

[Dougx]

Appologies to all, for some reason this morning I am unable to experience the problem above. I experiemented all weekend with no success and today everything is perfect. Confused!      Doug