That probably means you need to adjust your machine settings for steps/whatever. That you are using F2 suggests that you are working in imperial units?
So if you allow the machine to travel in a g1 move at 2 inchs/minute on the X axis, maybe your settings are also telling the machine to move at 2 degrees/minute. You may need to massively increase the peak speed permitted on the A axis, to something like 720 degrees/minute. And use a higher feed rate.
Cheers
Roger