Audio and Video dropouts Final Cut Pro Multicam

I'm currently editing a music video that incorporates four different camera angles. The synchronization between the visuals is seamless and looks fantastic overall. However, within the first 20 seconds of the video, there's an audio (and video) dropout of approximately half a frame. After the first 20 or so sencods, everything returns to normal.

I have not applied any plug-ins to the audio or video. I attempted to detach the audio and insert it later on either FCP or Protools, but this is not working because now the video has lost many frames.

I'm seeking alternative solutions to address this issue. Any suggestions or insights would be greatly appreciated.