After I registered FSUIPC 3.80, everything when I plotted a route with SID into FMC, and before even engine start, the active LNAV rounte line in MAP MODE changed when I paused the game.After takeoff the line shifted even more, during climb and turn too. I don't know if that's normal, but I don't think so.Hopefully is not because my widescreen, because it was normal before I registered the FSUIPC.FSUIPC 3.80FSUIPC 3.80's setup pageLNAV route line before engine startLNAV route line before engine start when "P" is pressedLNAV route line shifting screen 1 after takeoffLNAV route line shifted again when turningrouteline become normal after turn I had updated the 7600GS driver into the latest, but still no luck.Hope it can be solvable.Thanks everyone!!!

It's normal for the ND plotted track ahead of you to shift as the aircraft changes speed and altitude.

But the thing I don't get it is when I am on the ground, the routeline changes even when I press "P" to pause?

Oh so I found out that once the weight and other data had set into FMC's PERF INIT page and press EXECUTE, the routeline will shift due to weight and flight level difference? I thought only VNAV will change and LNAV won't change.Now I know...^^