Gigapixel 5.5.2 - Batch Processing Issues

I’m using a Mac Mini M1 for batching image sequences in Gigapixel. Performance is fine, but I noticed it gets “stuck” when processing. I’ll setup a few thousand images to be processed overnight, wake up, and find it’s stuck on #650. This isn’t an issue of the Mac sleeping or anything.

If I hit “Cancel Processing” and restart the process, it’ll continue on like nothing ever happened, until it gets stuck once again later on in the batch. I’ve tried adjusting memory consumption low/medium/high, but it doesn’t make a difference. The images aren’t crazy huge either: Jpeg 1920x1080 outputting to Jpeg 3840x2160.

Anyone else experiencing this issue?