Sync isn't drifting — it's obediently following a wrong beatgrid. The software guessed where the beats are, guessed wrong, and now every quantized feature inherits the error. The fix is the grid, and it's quick.
Load the track, turn the metronome click on in rekordbox, and play from a clear kick section. If the click flams against the kick, the grid is off. (This is also why the same track 'drifts' on every deck — the error travels with the file.)
Grid analysis fails big on half/double tempo — a 140 track read as 70, or 87 as 174. If the BPM shown is half or double what your ears say, correct that before touching the grid: ×2 / ÷2 buttons in the grid edit panel.
In GRID EDIT, use the arrows to nudge the whole grid until beat 1 sits exactly on the first strong kick. For most electronic music with a steady tempo, that one move fixes the entire track.
Live drummers and old disco drift for real. Re-analyse just that track with tempo mode set to Dynamic so the grid follows the drummer instead of averaging them.
Grid edits live in the rekordbox database — your USB still has the old grid until you re-sync the playlist to the device. Fix, then re-export, or the CDJ keeps playing the lie.
Every quantized feature — sync, loops, hot-cue snapping, phase meters — trusts the grid completely. A grid that's 40 ms early makes perfect hardware sound broken. Fix the data, and the hardware is suddenly flawless again.
Fixed it? The manual this came from covers the rekordbox the same way — every control, every failure mode, in plain English with diagrams. CDJ-3000 — The Complete Visual Guide — £9, instant PDF.
Get the manual → £9 Or keep using the free stuff →