What string guage are you using? Obviously, the lighter the quicker.Also, play around with string height adjustment..that can make a big difference. Neck width varies considerably, and can affect speed.

Also, I have lots of guitars, and each one has it's own "personality". For instance, I have 2 335's. One plays like a dream and the other is just stiffer-harder-slower. They have the same brand and guage of strings.

Go figure...

Russ