Buon Giorno,I need help for a problem showed up days ago. When I start a flight all is exactly as I set up(normally I customize REX with meteo defined by user in fs2004(cumulus,cirrus density and height,visibility etc.). Until now the outcome was excellent.Now when I start all seems normal;after few minutes suddenly clouds and horizon become black,then,after minutes all get back and so on. I tried to change some parameters inside REX and FS2004 without results.Here are two screenshots as sample.I don't understand where is the origin of this problem.Thank you for your attention. Bruno