No doubt strings can change speeds,especially when changing the material and number of strands but that is a change and a significate one but that alone won't give you a 23 fps increase.

Changing the speed nock location will also help but never have I seen much more than 4 ps difference,assuming they were properly positioned to begin with.If they are not in the proper place,they will rob lots of speed.


I gained speed with putting my sts in different places as well but it was only a couple fps,but that wasn't what I was looking for,just what happened.