On the real aircraft the computer controls the engines N1 speed to not exceed an N1 bug on the speed gauge. The speed bug is auto set according to conditions. So if you push the throttles to full, the N1 speed is restricted to the bug, and pulling the throttles back allows the engines...
I have an XML Avidyne and XML G1000 set of gauges that for a very small
number of people cause CTD's.
Usually these people have ATI cards and/ or strange mixes of memory sticks,
as opposed to matched pairs. I now have a guy with a matched pair and a
I and our beta testers do...