after some issues with 2014 i5 pc, i just bought brandnew 2016 i7pc nvidia 980 and reinstalled prep3d, addons: airbus 319, gsx, kjfk2, rex, fsuip, everything seems to run ok now, but with outside view, my aircraft starts full black and it takes 10 seconds and than the colors come, also when fuel vehicles arrive, they are black, it takes 10 to 20 seconds and then they slowly get normal colors , also it takes 20 seconds for airport buildings to come on and strange things appear sometimes like catering vehicles are standing in middle of the right wing of my aircraft. Altough the system proudly displays that environment was built in 8 seconds. my new pc seems to be very powerfull, high mem, HSS , 980 videocard, what can be causing this slow down scenery issue ?