Quote Originally Posted by Prythwin View Post
is this true? what are the nuances of doing this? How does the server react to this? will this effect my my GDC uptime?
Yes, this is true.

The server attempts it up to 14 times in very quick succession (not simultaneously). If it succeeds on the first line, it fires off normally, but in those occasions you press the macro a split second too early, the macro might still register when it reaches line 12+ (for example). It won't slow your GCD uptime any more than a regular macro and will slightly increase its responsiveness.

It is actually recommended that you always macro Sprint in this way. Sprint cannot queue anyway and a 14 line Sprint macro is more responsive than the regular version.