Sp1 Blurries solution (maybe)

I have had a hard time with Sp1 blurries. I figure this post might only help a couple of people, but worth a go, you know!?My rig is a 6600 Core Duo @ 2.4G, 2 GB of RAM, and a 8800 GTS - bought largely to run FSX. Frankly, if we can't run a modern game on this platform, there's a problem. I run Q4 & D3 at max settings with no stutter, and both games are state of the art 3D, imho.I had frame rate issues with FSX RTM. Much of the world, no problem. With Horizon's UK scenery I could get 50+fps, with no Autogen - nice, clear, detailed textures. But NYC and similar was down to 5/6 fps - unflyable. I was disappointed.So I hoped SP1 would sort it. And at first I thought it had. NYC was suddenly in the happily-flyable teens. A real improvement - until I got the blurries. Horrid, nasty blurs everywhere.I've tried every tweak. V_synch leads to tearing - not good. Many tweaks make no difference. AA on a GTS8800 is not a limiting issues, as far as I can see, since the graphics card is not being stretched (roll on DX10!) - likewise resolution seems not to be an issue. I think you can crank up a lot of your settings, or lower 'em, without significant changes to texture clarity.But I have improvements by 3 ways:1. Set The TEXTURE_BANDWIDTH_MULT=400 - yup, 400, not 40, and I think there is a minor improvement here2. FIBER_FRAME_TIME_FRACTION=0.4 - I have seen many different suggestions for this, but I am 99% sure I saw a better result with texture loading with this setting.The above 2 I thought helped after a clean RTM + SP1 install. But I was really unhappy with the remaining blurries. I figured more radical surgery was needed.3. This is the killer: I had FSX on a separate HDD, a SATA_II 300GB monster. Tonight I decided to uninstall the lot. Then Format D:. Ouch. But I figured radical measures were needed. And using Perfect Disk I couldn't help but notice in "Analyze" mode that black unmoveable blocks were all over my drive - which must be slowing down access, I figured. So a full format was required. Then a defrag (to my surprise PD STILL defrags a blank drive - at least it's quick, though!)Then a FSX reinstall. Run it, fly a couple of flights. Then PD defrag. Then SP1 install.The result: minor blurries - and I may be kidding myself. Possibly this is what I was seeing before (because at low alt without Sp1 I noticed blurring anyway) BUT huge frame rate improvements. London City -> H'row, for example, has jumped by 50 - 75% fps. A completely different experience now. And clarity of textures that I am happy with - if there are blurries, they ain't a problem for me. Yet. In a week I suppose I might complain again!Why do I mention it?Because everything I've read suggests reading textures from disk is the big issue with blurries. And my original FSX install was on a clean HDD. I've put all kindsa stuff on since - hence my poor initial SP1 performance. Now I've gone back to basics, with a freshly formatted disk, things seem to have improved significantly.I hope it helps. You can get another HDD for nowt, these days. Worth a go, I reckon.