For Mac user: The conversion speed of TuneFab Apple Music Converter (Mac) has become slower than before. Actually, it's not just TuneFab, but all similar Apple Music Converters in the market are having the same situation.
The main reason for the slower conversion speed is that Apple has improved their system in the previous iTunes and Mac update. So we've made changes in the software accordingly to make sure that it can work with the latest iTunes and Mac system. If we can find a better solution later, we will update the software immediately. Please allow us some time.
For Windows users: You can adjust the conversion speed from 1X to 16X by following the steps here: go to Options > Convert > Adjust audio conversion speed. 1X to 5X conversion speed is recommended to avoid conversion error.