In a message dated 27/11/2006 18:52:41 GMT Standard Time, gwinsk@xxxxxxx writes: Having been critical of the approaches of a couple of addon purveyors, which I still am, today's experience has been a revelation. I'd tried the Tweak Kev mentions, of setting the texture reolution to 7cm; a tad OTT it felt too. At that stage I hadn't thought I was suffering from the blurries, though my textures didn't look as 3D as those in Horizon's pre launch screenshots. I also tried three other tweaks, mentioned on their forum: [BufferPools] PoolSize=5000000 That, on my machine, was a showstopper. All I had was blurries and I was unable to get out of FSX, it just hung. It had to go! Then I changed a couple at the same time, unforgiveable but I wasn't concentrating: TEXTURE_BANDWIDTH_MULT=300 (HAD BEEN 30) FIBER_FRAME_TIME_FRACTION=0.7 (HAD BEEN 0.33) Thanks for that Kev and Gerry, I've done the 3 Gerry did on my old machine and it seems to be much smoother, the joystick isn't so fiery, and the stutters appear to have gone. I'd seen a note previously on the the fiber time fraction, it said the default was .33 but reducing it to .20 would help increase the frame rates, so I did. The author said it related to the time FS spent drawing scenery as opposed to doing everything else. The note also mentioned it should divide easily into 1, therefore choices of .25, .20, .125 and .10 were also offered. I've now got it at 0.7 - as Gerry - and no problems. No doubt an explanation will emerge. Not sure what the BufferPools is all about, but following Gerry's experience I've not touched it, in fact it doesn't currently exist in my fsx.cfg Frank T.