I had a very similar experience. I had installed FSX/SP1 on a fresh XP Pro installation after building my new system and was devastated by the fact that I had horrible blurries. For one reason or another, I ended up re-installing FSX and then SP1 and now my install runs perfectly! I'm locked at 30FPS with ASX and a couple other addons and I have ZERO stutters and ZERO blurries. In fact, I'm able to slew forward at over 700kts at around 600ft without experiencing blurries.VERY odd to say the least, but I'm not complaining.

Yeah I noticed the same thing. I can now slew and not get blurries. I put zero for the autogen trees, but tress still show up so I'm not sure whats going on with that.