Sync Gone Wrong [osu!]

For some reason half way through playing a 27 minute map, the map lagged or something and the audio was slightly ahead of the gameplay. Ruined gameplay and score..
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Profile: osu.ppy.sh/users/12066874​
Map: osu.ppy.sh/beatmapsets/724034...
Score: osu.ppy.sh/scores/osu/3636455662
Skin: mega.nz/file/v85C2I4B#pixSWOP...