Any way to “smoothly” turn a rotary knob in plugins? – Page 2 – Effects Forum

What a discussion… Almost no one can see the core of the problem for the lack of experience with rotary controllers!
Rotaries send Midi. They send increment and decrement values if implemented correctly (not all are). That has the advantage of not being restricted to values between 0 and 127, as you can increment well beyond. But it has the disadvantage, that you would need several revolutions to span the usual range of a parameter. To overcome this, they use the speed of rotation to jump several values when moving the control fast. As Midi can only send one value per millisecond, That results in steps. These steps can be as big as 5 or more. (Midi over USB can be faster btw…) The receiving side (your DAW) now needs to smooth or interpolate these steps to get the values in between. That process comes with some latency.
My guess is, that that smoothing does not happen. Or, even worse, your controller does not send inc/dec values but standard cc and does it internally without smoothing… Then it would be a bug in the firmware…