Now when trying the same in the Wowza 3 environment (with the same config) and download request, every .ts file download lasts exactly as long as the duration of the .ts file is (10 seconds at the moment). So it seems that Wowza streams that file instead of letting me download it as a normal file.
Is this new or how can i get back to the Wowza 2 behaviour ?
If downloading .ts chunks is really abnormally slow it is most likely a network issue. To eliminate Wowza as a factor, if you can, download a .ts file locally. Use a copy of Wowza running on your desktop. I think you will see that Wowza is not the bottleneck.