Originally Posted by
krismiler
The autothrust is quite slow to react to changes, it probably targeted the lower speed first by reducing power and then realised you wanted to climb so it increased power. It's a 1980s design and can't keep up with even a modern smartphone. You would have been better off waiting until the aircraft was properly established in the climb before winding the speed back or managing it.
I have the impression that the older A320s had a better A/THR response and spool up time. Did something change in the FADEC software? Both CFM and IAE engines at the previous companies that I’ve worked for spooled up faster and had better A/THR response than the current (new but still CEO) IAE engines that I’m flying now.