Changing Monitors (A B C) in Control room need more than one second and disturb reproduction.
Changing mono to stereo switch (command: Select Next Downmix Presets) - the same!
Generaly, Cubase 10 is very slow - more slowest than Cubase 9.5 , almost unacceptable about that.
If it is possible - add to new update posibility to change LINK PANNERS option for more the one channel simultaneously (make changing for all selected track with only one check/click)