Snuck out and got a cheapish graphic card today, just to complete the ensemble. A GT640 2 gig, not a crash hot card but I figured it would do the business. I've installed UTX Europe, Ultimate Traffic 2, Tongass Fjords plus a few other add on airports courtesy of the Simviation library. I've reinstated the original config because I wasn't happy with the online Auto tweak tool results, I've thoroughly read NickN's stuff and applied a few tweaks alongside installing Nvidia inspector c/w the recommended adjustments.........It Flies!!!!!!!!!
Other significant tweaks were: Cleaning my glasses and the screen, I mock ye not, it made a difference

Most sliders are maxed out apart from the terrain mesh complexity, cloud draw distance and water and road vehicles. Bloom and lens flair unchecked.
No blurries, smooth with good FRP in nearly all situations........The exceptions being UT2 limited. If I have 100% traffic at international airports it slows down to a jerky framerate. Tolerable but not brilliant. If I use the Los Angeles int download (available here at Simviation) it becomes intolerable.....
......but what the hell I'm more than happy, it looks so good now and there is room on my mobo for future upgrades on the processor and graphics card.
.....job done at last.