I found a possible solution elsewhere for the slow panning for chaseplane in FSX and it now seems to be working normally for the moment.....Click the setting "always on top." I would be interested to see if this works for others? Turning off advanced features seems to work too but I end up with jerky panning and zooming. Once Fsx is in full screen, Chaseplane is working "behind the scene" and so far so good.