does not download in 320 kbit

[mxxxxxoaoaoa]

premium account.
dict has 320 filesize but output file is 128

track["download"](download_dir, quality=track_formats.MP3_320, filename = '123123123.mp3')

dict:
"FILESIZE_AAC_64":"0",
"FILESIZE_MP3_64":"0",
"FILESIZE_MP3_128":"1863679",
"FILESIZE_MP3_256":"0",
"FILESIZE_MP3_320":"4659199",
"FILESIZE_MP4_RA1":"0",
"FILESIZE_MP4_RA2":"0",
"FILESIZE_MP4_RA3":"0",
"FILESIZE_MHM1_RA1":"0",
"FILESIZE_MHM1_RA2":"0",
"FILESIZE_MHM1_RA3":"0",
"FILESIZE_FLAC":"0",
"FILESIZE":"1863679",