Circular Ramp TOP interpolation?

I’m trying to get a Ramp TOP set to Circular to not interpolate across black and white pixels along the edges. As a test, I’ve set the Interpolate Notches param to Step and the Anti-Alias to 1, however, there are still certain pixels that are interpolated, creating grey values along the edges of the circular ramp.

I am using this texture as a lookup for rotation values, wanting the black edge (value 0) and the white edge (value 1) to not lerp along the way back.

Is there any additional tweaking i can do to get the curved edge as only full black and white pixels?

thank you!

Behaves the same for me there seems to be no way around it.

just use a thresholdTOP after your ramp
and on the common page check the “A” channel mask to have black instead of transparency.