Input Lag on Hori RAP4 Kai Silent for PS4?

Hi,

First Post here.

I recently picked this stick (Hori RAP v4 Kai Silent for PS4) up on Amazon.
When I started using it noticed there is 1-2 frame delay on inputs with it.
I tested this on SFV beta and GG Xrd by using the stick noting response time vs playing with the regular PS4 controller.

Is this a known issue with the stick? or did I get a defective one?

Is there any thing I can do to fix this? I love the case and feel of the stick, I just wish it didn't have this input lag.