Torrent Download Transmission or Deluge

I have always used Transmission as a client and never tested any other clients including K-torrent,

Transmission is absolutely fast and one can have several torrent files simultaneously downloading.

It has lot of peers and seeders.

I could not download it but had downloaded  Deluge instead in my Laptop running Endless OS.

I wanted to download BSD.
After about 1 GiB of USB image was downloaded I tried, 4.5 GiB of DVD image.
It Froze after about 300 MiB.
It was very slow.

I closed Deluge and activated Transmission  it will finish 4.5 GiB in about an hour.