Exported videos have sound/video glitches

Hey, 

I'm finding I'm getting some audio/video glitches after exporting media. Basically when I playback the exported file, at some point it will stop for a few seconds (though I can see in the timer bar it is still playing and the picture will freeze and the audio will drop out) and then it will resume again. I have tried various different types of export, and they all have glitches in different places, I've tried it at least 6 times. It's hard to share video examples as each one has done it in a different place.

I have tried changing the export from hardware encoding to software encoding and tried rendering it and exporting to media encoder, which didn't work either. I cannot change it from GPU rendering in my sequence settings. 

When the edit timeline was unrendered, there were no issues at all. I've also tried rendering the media as a ProRes 444 and this has audio glitches but not video ones i.e. the sound cuts out, but the video keeps playing, unlike in the exported media where the whole thing freezes. 

I'm using Premiere Pro 24.6.1 Build 2 on a Macbook Pro M3 Running OSX 14.1 Sonoma