Hi Andrew,
Thank you for stepping in. Maybe it's not the same problem since I don't have the input lag described in bolandross' last post.
As for your questions:
- When you play a song, is the chord highlighting EARLY or LATE?
Late
- What Band-in-a-Box version and build are you running?
Version 2019. Build 324
- What OS do you have?
MacOS Big Sur 11.1
- How do you have you speakers connected to your Mac?
Mac to Onkyo AV Receiver TX-RZ1100 via HDMI 2.1
Regarding the last question it may be relevant to note that the delay also occurs if using headphones connected directly to the Mac's output.