Lag/skipping during playback in clip transition

[Steve Little]

This only happens in one project on mine - all others are fine. Playback lag doesn't happen except in transition between clips. I'm using the same VSTs I normally use and I have tried freezing tracks, changing drivers, increasing playback i/o buffer size. Any ideas? Thanks!

[Colin Nicholls]

Does the effect persist in an exported audio file?

[Steve Little]

Nope, nor does it happen if I bounce to clips.