Overhead using Test Mode?

[Jonathan L.]

I'm looking at using the new Test Mode. Is there ANY overhead associated with it during an official match?

Also is there ANY overhead associated with bringing up a new window on the Driver Station through the Dashboard during the test?

Or using network tables to communicate between the Dashboard and robot since the robot would be turned on, on the field and would not go into the test mode, however since the code would still be sitting there in test mode, are those network table entries active, and therefore overhead?

I'm using LabVIEW.
Let me know if you need to see the code.