Unusually high deviation for beatmap 983680

[Tillerino]

Beatmap: https://osu.ppy.sh/b/983680

Score:

[
  {
    score_id: "2330501416",
    score: "1277380",
    username: "Dan05",
    maxcombo: "239",
    count50: "0",
    count100: "13",
    count300: "165",
    countmiss: "0",
    countkatu: "8",
    countgeki: "52",
    perfect: "1",
    enabled_mods: "0",
    user_id: "7751808",
    date: "2017-07-08 21:05:36",
    rank: "S",
    pp: "138.287"
  }
]

Koohii calculates 137.71pp, which is further off than I would have expected. Do you have any idea why this might be?

[Francesco149]

hmm, 1-2pp difference is like < +-2% error, it seems pretty reasonable to me. I don't think anything is particularly broken on this map, it's probably just the lack of slider calculations that buffs sliders that slide towards the next jump. lots of maps have this kind of inaccuracy. I guess I'll keep this open for when I'll add optional slider calculations