Bug Unity Toon Shader glitching out and smearing/repeating specific objects

Hi! I'm working on a game using the Unity Toon Shader (UTS) and I'm running into a weird bug. On my computer everything looks fine. But when my partner runs the same scenes, on his Mac and on his PC, objects that are using the UTS shader start to glitch and repeat. It's almost like they are getting burned into the screen, or over rendering? I'm not sure what you would call it. Attaching a video of it happening, as well as a screenshot from the video. Some other notes:

• It's not EVERY material that uses UTS..but most of them
  
• If he opens the UTS sample scenes, it doesn't happen
• Some materials for him appear blown out (pure white and almost with a glow)
• I'm on an M1 Mac, and he's still on Intel (not sure that matters)
• He sees the same 'repeating' pattern on his PC

Unity Version: 2021.3.22f1
UTS version: 0.9.4

Link to video:

 

Bumping

 

Bumping. It's strange how this is happening on Intel Macs & my Windows 10 gaming PC.