Well Jim I can tell you I had some major problems with FSX operating under Windows10 ! I didnt expect any problems since it is a Microsoft program....but my Fsx didnt function properly...It took at least 15 minutes
to start up and changing from one aircraft to another took another 15 minutes an changin scenery same story . I tried several days with adjustments to see if anything changed for the better..result: zero !
Unfortunately i had to return to my good old Windows7 Ultimate...and everything went very smooth again.I warned my friends:" Be carefull if you install windows10 its a disaster for your FSX!"