Parallel downloads issue with HTTPoison

I am having issues with the response times when downloading multiple images in parallel with HTTPoison.
Sometimes even a small file of 100 KB takes 15 seconds to download.
Please help

Will it help if I use default pool in options

It would help if you give a bit more info on what are you doing. Maybe the site you are downloading from is slow? Maybe there’s a long SSL handshake going on?