What is actually faster
Quick career does not simulate three seasons at once. It keeps one choice and one report per season, but shortens the base arc: start at 18 and retire at 29 unless a retirement decision extends the run.
Opening boost
The engine adds a small boost to starting attributes and to the calculated fit of academy offers. That brings the player into competitive results earlier without inventing separate rules, clubs or events for this mode.
When to choose it
Use quick career to try another position, academy or decision path across fewer seasons. For the longer development arc choose classic career; for a shared date-based seed choose the daily challenge.