Let me first explain my scenario: I am backing up a lot of pictures so the majority of the files are 1-5mb large. I have two different collections which are now both being synced between my computer, my Raspberry Pi and from time to time to an offsite pc. My estimate is that I have an average throughput of 5-10kb. But the pattern I am seeing is that I have about 10 files in transfer stalled at 0kb/s for somewhere between 10-15seconds. After that the average transfer speed flares up to 100-150kb/s and then goes down during 10 seconds to 0 and begins all over again. Since I did not see this pattern when I only had one share to sync I believe the issue is in the number of transfers. My first test synced about 100gb in a couple of days but now it looks like I´m lucky syncing 1gb during the same time frame (now with two separate sync going on) The Raspberry Pi, with a usb-drive, is very limited in resources I believe that it is the number of concurrent file transfers that is causing the issue and therefore I am interested in if there is a possibility to limit the number of concurrent transfers. I really really like BTSync and with the Raspberry Pi always on I have a beautiful backup solution