Cubase Setup and Troubleshooting: Impact
Automatic Track Selection
By default, when you move a control which is associated with a
specific track, that track will become selected. If you want to disable
this behavior, uncheck the 'Enable Auto Select' option as shown in the
images 3 and 4.
Smart Switch Delay
The Smart Switch Delay setting changes the behavior of switch/button controls depending on how long the button is held. When set to anything other than 'Off' it may appear that some button functions are unresponsive, when the button is held for too long.
Duplicate Track/Channel Names
Check your project for tracks and Mixer channels with the same name and
rename any duplicate tracks. If Impact encounters two tracks or mixer
channels with the same name, the track selection can
get out of sync with what you see in Cubase.