Problem with to farm

Hello. before the new patch I never had problems to farm minerals usado various profiles that I found on the forum, but now with all the profiles have the same problem, basically my Pg 90% of the time idling around the ore which I would like to farm and then it goes away, I personally do not know what I could do to solve this problem, I hope for your help

Before the patch I never had any problem

And sorry for my bad English

TY

Problem with to farm