Animated Blurs Aren't Smooth

I’m just getting started with Harmony. I successfully added a Guassian Blur to a drawing and animated it growing in blurriness. However, when doing a render preview it looks like the blur is only changing every 6-8 frames.

I want to make a very smooth transition where it increases in blur for every frame. I even checked each keyframe value and saw in the timeline it’s technically increasing in blurriness for every frame. But every render preview and render shows otherwise. What could I be doing wrong? This is quite frustrating since it should be simple to do. Thanks.