All you really need to do is check that the calculated move ends when your stopwatch says it should.
For example, make a 1, 2 or 3 axis move that has a total length of 10 inches at a feedrate of 10 inches per minute. The motion should stop exactly after 60 seconds.
If you are using the standard Camsoft variable \73 for feedrate, you can adjust this variable in your STARTUP.fil
\73 =333
This sets the initial boost of Camsoft's normal feedrate to 333% of normal. Trouble is, you have to take pains in the rest of your logic to return any feedrate override to this factor so that at normal feedrate, the \73 = 333
What I did was kept my feedrate override boost values in a new seperate variable, and set up logic to call in that new variable. Here is sample code from my INPUTIO.FIL that might help you with feedrate override, or it might confuse the heck out of you
IF#18=1THEN\318={\318+1} :GOTO :HOLD 'input18 is called "feedhold momentary pushbutton"
IF#17=1THEN\273={\273+.1} 'feedrate increase pushbutton located on right side of feedhold button
IF#19=1THEN\273={\273-.1} 'feedrate decrease pushbutton located on left side of feedhold button
IF\273<0THEN\273=0 'minimum feedrate override is zero, or equivalent to feedhold
IF\273>2THEN\273=2 'maximum feedrate override is 200%
\73={33.5*\273} : DISPLAY4 {\273*f} : DISPLAY2 {\273*100} 'when feedrate variable \73=33.5, actual commanded feedrate is at 100% by external clock.
One thing you might want to check first, is the servo update rate of your Galil card. Factory default is fairly slow at 1 millisecond, and it may be possible to get it down to .375 millisecond without loosing any features of the card. It is possible to decrease this setting, and I did and would recommend it as it improves system response. However, you will have to retune the motors.
In my case, I have to slow my feedrate variable \73 down by almost 66% by initializing it this way in the STARTUP.FIL:
\73 = 33.5
If your system is running 1/3 of normal speed, then maybe changing the servo update rate on your Galil card would make the system about right. You would still have to retune the motor PID filter though.