I just purchased the 737-600/700. It seems to be a really great addon aircraft. I've been a big fan of PMDG since the old FLY days. They've always produced a quality product. My problem is that this thing is eating my system for lunch. I'm running a P4 2.4, Radeon 9500 with the latest drivers,512MB of memory. It takes a while for the aircraft to load in FS9,then my framerates are all over the place with random stutters and pauses. I have my sliders at mid-way and I've even tried turning my AI traffic down to zero. Any suggestions would be appreciated.

You shouldn't have such bad performances...Have you tried FS general tweaks like-render to texture off-3d cloud percentage 100%-FS Sky World texture packagesAnd many more available on the forums?I have a similar system, and with all sliders maxed out i do not have nearly as bad performances as you, must be something with your particular system.Are you running any other application together with FS ?

There's something wrong somewhere, and I doubt it's the PMDG. I ran it on a 2.2GHz at 24FPS with fairly high settings on a GForce 5900. Something is afoot. The PMDG I found only causes a very slight FPS drop and that's in the VC.I highly recommend that you run down the list of tweaks on the general MS FS hardware forum, a sticky I think on top has a good list of do's and dont's about FS. With 512Mb of memory, you may be running across excessive swapping, and I think the thing that worked for me best was to set the page file to "controlled by the system". The tweaks forum has a lot of ideas on that.Hope this helps.

Thanks for your help, I've used the tweaks that appear in the MSFS forum. I try to use FS Autostart to close down backround programs. It seems like I have a problem with the amount of time it takes for the textures to load. There also seems to be a lot of hard drive activity with the 737NG. I'm sure it's my system but I don't know where the bottleneck is.