Thanks Banjoman. Here's a few more against varying backgrounds. I'm messing with the Desktop Control Panel colors for Nvidia and finding I can get pretty good results without needing SweetFX at all, so no frame rate cost.
That is always my advice, but first step, calibrate your monitor. There is no need for another piece of software that is consuming CPU-load/FPS and can causes failures.
Keep your system clean and lean. In my case I have an only for WoFF/MAW Win7-64 HD-boot, nothing else installed, no virus software, no internet. Keep your system Lean, it does not need all those free defrag, cleaning software, performance tools, it is all included in Windows.
The bell is ringing I should leave, this is my last posting for 2015. Thanks OBD for keeping WW1 alive!!!! Thanks You all for helping me.