PMDG 600/700

I have a few problems with the pmdg 600-700 2D cockpit when loaded.1. On the main panel you have a purple track line that the aircraft follows to its next way point etc, the problem is instead of the purple track line been at 360 degress or straight up and down its on and angle, so the aircraft is always tracking on and angle.2. On the mcp panel you have a knob that allows you to change the mode from app, map, pnl etc, when I go flying on the internet and I select anything pass APP on the knob on the mcp panel while inside the cockpit becomes lagged, it as thou flight slim doing 1 fps, but when you go to the outside of the cockpit everything is find. When you reselect the knob back to app everything is find inside of the cockpit, the outside senercy is not lagged.I have gone thru and reslect everything to low within fs2004 and it makes no different to the pmdg.I'm at a lost what causing this problemThe machine is a 2.4 processor - 800 megs of menmory - ti4200 graphics card.Cheers