It's a bit like playing with driver updates to get that extra percent and upsetting all that has gone before
I think here that if you are reasonably happy with your setup and it runs stuff much as it should even if you feel it's a bit on the slowish side, then perhaps best leave alone
But if you are like me and it seems AD, where the World and his dog has an inferior machine but gets a better result then this might well be the answer and perhaps a good grounding to see what has been changed. If the results are better then one could look at what has been turned up, by how much and more importantly, what hasn't and perhaps was before draining the FPS for no advantage.
A good stepping stone and maybe the basis for an even better build but it can't really be seen as the answer to everything no matter how much it appears to be. That is simply because it will generalise your specs where as in reality driver variations and other software interaction would make you machine one of thousands of similar general specs that will in fact behave differently in some slight, but maybe in this case, significant ways.
So my suggestion to AD is give it a go.....it can't make it worse as you are ready to accept defeat and see what it does do. I for one would love to hear the results and more importantly to see if gives you a setup that perhaps you are happy to use even if it's only occasionally
There are some cracking FS.X models like those of Rick and DG and of course the Nimrod from Brian and team that even if it was only used for these it would be more than well worth keeping FS.X.
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