I use Serial.println() a lot when I'm working on my projects because it helps me debug the software. When controlling motors, I am frequently polling potentiometers and writing pwms to motors as well as printing the current data to serial so I can see whats going on.
I've noticed I get a significant improvement in processing speed when I delete all of the serial printouts, which is annoying when I spend time calibrating everything only to notice speeds change when disabling all the serial printouts.
My question is, can I simple comment out the Serial.begin() command at initialisation? Or do I need to delete all of the Serial commands individually? It would be nice to be able to switch the serial on and off by just (un)commenting the command out at the beginning.