I understand your point, but this is an FSX product, not a real 737 avionics product. It should take FSX limitations and flaws into account, I think. All I know is when I look down and see it climbing at 7,700 feet per minute, it's just not realistic. No matter what flawed data is to blame (FSX, FSUIPC, REX...), PMDG's autopilot simply should never be climbing at 7,700 feet per minute, ever. They need to put in limits, that's all. Limit the change in climb/descent rate to keep the g force felt by passengers to realistic levels!

this must be your pc related performance since i havnt had any troubles like this before, so i look carefully at your settings etc and take notice of previous post about what to do etc

I understand your point, but this is an FSX product, not a real 737 avionics product. It should take FSX limitations and flaws into account, I think. All I know is when I look down and see it climbing at 7,700 feet per minute, it's just not realistic. No matter what flawed data is to blame (FSX, FSUIPC, REX...), PMDG's autopilot simply should never be climbing at 7,700 feet per minute, ever. They need to put in limits, that's all. Limit the change in climb/descent rate to keep the g force felt by passengers to realistic levels!

Gabe..I don't know the first thing about programming but from what I have read if they made it so it ignored the wind issues and thermal issues then the vnav and lnav would not be realistic in other ways.Anyway. There is ways to fix the fsx flaws or minimize it so it does not interfere with high end add-on's like this. You really need to follow paul's weather guide. I think his username is UAL115So to sum this up, find the setting that is F*CKED up in your setup, fix it and then your NGX will not climb at 7700 FPM... Mine DOES NOT climb at 7700 FPM EVER. ( except that time I forgot to turn off FSINN weather)