Playback frame 'dances' around after applying Warp Stabilizer

Hello, new to Adobe Premiere so I hope this is an easy fix:

Whenever I apply Warp Stabilizer to one of my clips in a given segment, instead of creating a more smooth playback, the frame itself in the Program Window will move around in adjustment to the smoothness settings. Almost as if it's dancing around. Every tutorial I've seen doesn't have this issue. The frame remains still and rectangular while the clip becomes more smooth. Any suggestions as to what I'm doing wrong? Below are the Effect Control Settings I have:

Result: Smooth Motion

Smoothness: 25%

Method: Subspace Warp

Preserve Scale: (unchecked)

Borders

Framing: Stabilize Only

Additional Scale: 100%

Advanced

Detailed Analysis: (unchecked)

Rolling shutter Ripple: Auto Reduction

Crop Less Smooth More: 30%

Any tips would be greatly appreciated!