Hi, I have the same problem interestingly enough, the only thing different is that I am not using EF. I have SF and AS only running and have a fresh install of P3d V4.51, I noticed the same behaviour on changing from FMS or indeed any other view and then returning to the cockpit. An initial very bright outlook which returns over a matter of a few seconds to normal. Could this be a P3D issue instead of EF or indeed SF ? As I say I dont even have EF installed, the only common is I am using the PMDG 747.