Transmission

How is your network setup?
Straight through a router to the internet or do you use any other service as well?

For quite some time now I've barely been seeding anything. Lots a client connecting and instantly disconnects, get green and and when I looked in the logs under debug I see lots of lines like this:
inout.c:152 [Debug] the.torrent.x264.mkv: prefetch failed for "the.torrent.x264.mkv": Unknown error ...

I've tested the nightlies as well as the last official release.

It dies for me only when I'm running a larger amount of added torrents no matter if the torrents are on pause or running.
It consumes the memory fast which in the end causes different processes to run short on memory one by one untill ...