Super-low FPS?

So here's the story.. I had FSX installed and it was running OK, not great of course, but tweaked to get 15-20 FPS. Then I had a harddrive crash.Got a new drive and got it up and running again just in time for the release of TileProxy. So, I isntalled that right away, before even trying any default scenery.Now I've played around with TP and wanted to try default scenery with autogen agian. This is where I started getting problems. I get about 10 FPS with no autogen, and 2-5 FPS with any resonable amount of it. Before the crash, I was getting 30+ with no autogen and even at the extremely dense setting I was pulling 12-15. I also notice that things like building textures and the default cessna's VC textures are low-res and somewhat blurry.At first I was suspecting TP, but I've now restored both my fsx.cfg and scenery.cfg files to their default state and the problem persists. It might be something completely different. Any help appreciated.My setup: Athlon64 3500+, 1GB RAM, X800XT 256MB, M-Audio Delta1010LT, Samsung 500GB drive