Hi,
Unfortunately, we do not have a best practice for audio calibration as it will wildly vary depending on your game. Some forums that discuss similar topics can be found here:
- Sync actions to audio in a rhythm game
- GetTimelinePosition accuracy for rhythm game
- How to get an accurate timeline position
- How can I determine how on-beat an input is in Unity? (with no delay)
- Rythm game and latency
An option may be reaching out to the devs directly or posting on their social forums.
Thank you for reaching out. If you do find an possible implementation we will be happy to assist 