I personally think the high speed machining option is a must have to begin with but especially so with short segmented moves . Adding the high speed was a world of difference , and it was the difference of having mills nearly bouncing off the ground to smooth machining with fine line segmented code . One thing I noticed was that the machines wouldn't necessarily always reach high programmed feed rates , probably due to so much processing . Either way it was still much smoother and faster .
how much time you will save is going to be dependent upon your runs and it's tough to say how it'll react to macro but it should be an improvement . Has your mill already run the trial period ?