Audio sync issues when using external monitor
Hi - I'm editing a short film using iMovie with the help of an external monitor.
Everything looks fine until I either export the file, or just use my laptop screen.
Use of the monitor seems to result in a slight audio lag which means I have to resync everything on the laptop before exporting.
This is a brand new Macbook pro and monitor, so I'm surprised by this fault. Any tips on what to do here?
Thanks.
MacBook Pro 13″, macOS 10.15