60fps clips are choppy when at 50% speed

Im using the latest version of Premiere pro. I make reels for work, and consistently slow down all my 60fps clips to 50% speed for slow motion. It is usually smooth, but randomly they started to be choppy when slowed down. I tried contacting adobe support and had them remote in and all my settings are fine. I linked a screen recording showing the issue, but am not sure what else I can try.

Screen recording: https://www.loom.com/share/f805c233b4614ff79cf6f72b4e641672