Runs Improving With Vibram Five Finger KSO’s

Well today after missing a few days running due to my schedule I took a run just about and hour ago and my time improved past what had been my PB since getting back into my runs in June. I am able to push my stride a bit more in the VFF (Vibram Five Finger) KSO’s than previous runs.
I had been improving already with my previous footwear, Saucony Propel Grid Plus, but with the VFF KSO’s I don’t get all of the cramping I had with all previous shoe wear. The only shoes previous to these VFF KSO’s I could run in consistently without injury were the Saucony brand. I would still feel my legs were beat up with traditional running shoes I liked.
I do pretty extensive stretching every night before going to bed and have noticed that even then my legs aren’t as tight as normal on days I run.
The thing I have to work on now is running more consistently not letting my schedule get in the way taking my runs before it gets too hot.
So far changing to the VFF KSO’s have been better than anticipated in the short time I have had them