Requires an extension called Time v3.2 to display milliseconds.
Showing milliseconds is useless if you can't jump to them. Here is how to navigate precisely: potplayer show milliseconds
Is the audio 50ms early or late? Standard players hide this. With milliseconds active, you can press the F and G keys (default PotPlayer audio shift shortcuts) and visually verify the adjustment in real-time. Requires an extension called Time v3