Hi there
Thank you for your input this is how I have my prepared 3-D setup I have not altered the default settings i.e. from it's original load I have implemented the config tweaks but before doing so run a test with 100% stock settings apart from three add-ons which are active sky next, Rex4, and Orbix global Iceland demo looking at your comment and the previous one on wondering if it is a AMD issue as when I am using my X plane's 10 I'm getting frame rates of anywhere between 30 and 60 frames per second depending on how much cloud and scenery I am in or could it just be that the stock settings in prepared 3-D are set too high not sure!.