Just to let you fellow C700 lovers know that I have created a separate bug thread about the slow ALT/HDG incrementation here: https://forums.flightsimulator.com/t/longitude-altitude-heading-select-advancing-slowly/451626
Jummivana (Jayne) - Senior Community Manager has kindly requested any information regarding this issue so she can bring it to the team’s attention. 
So head on over to that thread if it’s occurring to you or have anything to share.
Thanks
CC: @Dakfly0219