Add download sequentially by default

[ambigus9]

I would like that when I add a torrent it automatically download sequentially

[Switeck]

Healthy enough torrents (availability > 10?) are downloaded in sequential mode automatically by libtorrent (which qBitTorrent uses).
https://github.com/qbittorrent/qBittorrent/issues/7831

[ambigus9]

What is availability > 10 means? It means that the torrent must have Seeders > 10 or Leechers > 10? Thanks.

[Switeck]

Either the torrent has to have 10 (or more) seeds connected to you (rather than just reported by the tracker or peers as existing sometime in the distant past)...
...OR between all the peers connected to you every piece of the torrent is available on at least 10 of them, though obviously not on the same 10 peers. (or they'd all be seeds)