Help me Kodi play movies with 24HZ

Can you tell me that when I watch a movie on Kodi, but if I keep the screen in sync mode with the movie (auto from 60hz to 23.978 or 24hz), when I play the movie, the projector speaker has a small popping sound throughout the movie, which is extremely difficult. bear But if left in 60hz screen mode, the projector speaker will not have this phenomenon I’m using nvida shield. Thank you guys