New Transmission add-on thread

Now I have tried my way through all the updates from 2.11 to 2.34 beta 4, if I use 2.11 i download most torrents with a speed well above 6 MB/s but transmission randomly stops and i can't download torrents from eztv.it... Now I'm back on 2.34 beta 4, the only version that doesn't stop on me, but I only get a maximum download speed of about 1 MB/s, torrents from eztv.it will seed, but torrents from sites I'm registered to won't seed. The last couple of times I tried to upgrade to 2.40.03 via frontview I got a error message and the transmission add-on disappeared from the add-on menu in frontview, I wasn't able to reinstall it either without doing a factory default of the NAS. So does anyone have any idea how I can get transmission seeding, and getting faster download speeds? How to successfully upgrade to 2.40.03? The speed is not limited in the preference menu.