Universal offset is the audio offset option that applies to all beatmaps in the osu! client. Setting it to a value other than
0 adds a delay between every beatmap's song and the other associated sounds and graphics. Setting the universal offset to a positive value will make the sounds and graphics associated with the beatmap appear earlier, while setting it to a negative value will make them appear later.
Each player's optimal universal offset value differs due to variations in their systems. A Universal Offset, other than
0, should only be used when all beatmaps have a noticeable delay. Otherwise, a local offset should be used instead. An incorrectly determined universal offset will cause significant timing problems on all beatmaps.