slow with large MPD about n_m3u8dl-re

[3052]

this code can parse in 2 seconds:

package main

import (
   "154.pages.dev/dash"
   "os"
)

// TotalSeconds      : 1.9082671
func main() {
   text, err := os.ReadFile("0b42a3d4-d856-4cab-a1b1-500b743f202d_corrected.mpd")
   if err != nil {
      panic(err)
   }
   var mpd dash.MPD
   mpd.Unmarshal(text)
}