UE 4 Grooming Tools /Performance and other Problems

Hey, i was playing a little with the Grooming Tool, and its Super Expensive only on just 4k Curves Hair, is there an Reason ? or is there just an Huge Basic Cost.
4k Curves Hair, with Lower Settings from the Command, just is a 25-30 FPS Lose on a 1070, thats Pretty hard.
are there any Perfformance Tips ? , oh an Another Problem is When im Bind my Hair to my Skeleton Place it in the Viewport and Drag and Drop it /Bind to Head Bone it works.

But when im Try to Bind the Hair in a BLueprint , the Hair just Explodes strangley and are different Location.

are there any Tipps out for the Grooming Tools ?

Thanks in Advance !