If there is a tempo change in a track, you can manually set a new red Beat Warp Marker.
Setting Manual Beat Warp Markers will warp the Beatgrid from this marker. This allows the Beatgrid to follow the track’s change in tempo. Tracks with Beat Warp Markers are able to be perfectly Synced to tracks with no tempo changes without the beats dropping out of time.
You can set as many Beat Warp Markers as you need. A track may change tempo multiple times, or the tempo may fluctuate if the track is from a live recording or ripped from vinyl.
NOTE: Changes in tempo over time are common with live recorded music (such as rock, funk, reggae, etc.) Changes in tempo are very rare with most electronically created music (such as house, drum & bass, pop, etc).