This may happen when you use long impulse responses with instances of the Space Designer plug-in. If you encounter this issue, here are some suggestions for avoiding it:
- Select impulse responses with shorter decay times for any Space Designer instances you are using in your concert.
- If you are using a high sample rate, try reducing it by choosing MainStage > Preferences > Audio > Sample Rate.
- Performance can be related to CPU power and RAM. If your computer has minimal RAM, adding more may help with this issue.