Citra Canary + Pad2Key = Slow Response

Hello.

Let me start by saying that you've done an amazing job with Retrobat v6 - the update has exceeded my expectations.  

While using Citra Canary, I have noticed that the Pad2Key inputs are very slow/laggy: the mouse cursor doesn't respond quickly enough, and there can even be a significant delay when just swapping between different screens/layouts.
However, when I try it using an actually keyboard there seems to be no noticeable delay.

I have tried this with an updated version of Retrobat (v5.3 > v6), as well as a fresh install, and I encounter this issue with both.
I use an Xbox Series S/X controller via Bluetooth.

Is there is something I can do to fix this?

Thanks!