In addition to what Jon said, have you set your bounce buffer size to a high value? If so set it back to Follow Playback buffer size and retry. Also you can easily disable the plugin flushing as mentioned in the release notes: Edit > Preferences > Audio - Configuration File: BounceFlushTailsMaxDurationSec=n (0 to 60; default is 20; set to 0 to disable tails flushing) Effects tails maximum flush length while bouncing (seconds).