LIGHTS AND WAKES

I have just noticed a couple of puzzling things with my FS2002. 1. At night, when I switch from cockpit view to spot plane view, at first the nav, beacon, and strobe lights are there, but in about three seconds they go away and are no longer visible. If I go back to cockpit view, then back to spot plane, the same thing happens.2. I no longer see the wake or water splashing when using sea planes in spot view, or in cockpit view.I have tried moving all the sliders to the right in Options, Steetings, but it does not change anything.Somehow I must have done something or added some plane or scenery that has caused this.Any thoughts anyone?Thanks