HUGE fragmantation using Deluge

[Leokosta]

Hello. First of all, I am as newbie as anyone can be, so sorry about that.
I use utorrent, but I was looking for another torrent program, cause utorrent does not do well with torrents with bigger pieces than 64 MB ( or whatever).
So, I used Deluge to download a 60 GB torrent, but it almost killed my HDD when I was moving it to a External HDD. The fragmentation went from 1% to 28 % (Samsung 2 TB). I had the fragmentation problem on utorrent as well, but it was solved by setting its advanced setting: diskio.sparse_files to 0. Any help on how to do this on Deluge ?

Many thanks

[Shryp]

Are you using full allocation or compact allocation under settings->download?

Full allocation is suppose to help with that.

[Leokosta]

Are you using full allocation or compact allocation under settings->download?

Full allocation is suppose to help with that.

Thanks for answering. Full allocation is enabled.

[Leokosta]

Update: tested to torrents. 2 GB and 5 GB .
On Deluge, Huge disk fragmentation. After defragment the disk, tried on Qbit. No fragmentation.