Please see the best practices to avoid audio-video sync issues:
- Close all your unnecessary Applications/Browser tabs for smoother experience
- Please choose a good configuration Laptop to record your videos. Recording tools are resource intensive. At Least i5 processors and 8Gb RAM is recommended
- In case if you haven’t restarted your system in a while, It might cause a lot of background processes running in the background. Restart your system and then try recording again.