Well, after further tinkering I seem to have jumped the gun as to impressions over my 100% frame rate increases in cloudy weather from the 15.7 drivers.
Turns out, having installed the 15.7's over my 14.12 installation, for the first time in over a dozen times of doing it this way there were consequences.
I used to religiously uninstall and thoroughly clean prior driver versions before installing new ones, but for the last few years I've gotten lazy and simply
installed the new ones over the old with absolutely no ill-effects.....until now.
What appears to have happened is the new install didn't quite agree with the old and many Catalyst features were not functioning properly, creating
a witches brew of active and inactive features as between Catalyst and FSX settings. It somehow borked my fsx Catalyst profile and I could not even change
any of the parameters to have effect in fsx. The end results were compromises in image quality but massive performance gains, particularly with clouds.
The result of this 'forced' configuration Catalyst chose for me wasn't too bad really...I've never quite experienced such silkiness with massive cloud/low visibility
situations before. Anyway, at least I learned a little more about what features in ccc and fsx enhance or detract performance, particularly in bad weather.
I uninstalled the mess I created, thoroughly cleaned with a driver utility, reinstalled and all is ok again. Set up a new fsx profile and catalyst now works as
it should, meaning the changes applied or inactivated have a very visible effect in fsx once again. Lesson learned, henceforth I'll always uninstall and clean out old
drivers before installing the new ones.
A tip for those experimenting with settings: You can alt-tab into windowed mode, launch Catalyst, make desired changes and alt-tab back to full screen to see the
effect immediately applied.
Overall the drivers are an improvement nonetheless. I've gained a few valuable frames, textures load faster and image quality is, as it always has been with
MD, superb. So although these drivers aren't quite the magic I thought they were on account of my installation malfunction, they are in fact an improvement.
For those contemplating the new drivers, avoid the headaches I encountered and perform a proper uninstall of your prior version. The 15.7's seem particularly sensitive to this.
Is there a way to set up multiple catalyst profiles for the same .exe file? I'd like to have an instant configuration for performance and another for eye-candy if possible.