Anna’s Archive also has a torrent, but it is a huge one, so you’re gonna have to seed from there - but don’t seed the entire thing, just the stuff you need.

For example, say I want to download “Modern C by Jens Gustedt”:

• scroll down below
• click on “external downloads”
• read the torrent instruction carefully

  collection “libgen_rs_non_fic” → torrent “r_2451000.torrent” → file “33fbdea319a9d50e8d19534d3d407573”

• add torrent, and only select the list with the exact hash - in the above example, “33fbdea319a9d50e8d19534d3d407573” in the torrent list