2D Stutter/Flickering when moving at high speeds

So far this seems to be happening in the editor, web player, and in standalone builds. I'm using Lerp in the FixedUpdate() method to move the positions of a line renderer.

The framerate seems unaffected, but as the positions move at faster speeds, the line renderer seems to flicker/stutter. If I take a screen recording or a screenshot, there isn't any flickering, but check out what it looks like when I record my screen in slow motion (using my iPhone camera):

Recording of iMac screen: https://youtu.be/Dgjdf3-7zp8

Screen recording of iMac: https://youtu.be/RgQpYsEVy8A

If you pause the first video, you can see the semi-transparent overlap and stutter.

I've tried using Lerp in both Update() and FixedUpdate, setting the framerate for iOS to 60fps, and modifying the fixed timestep. So is this behavior normal? It certainly seems not since it is quite jarring..