DFSR performance question - high latency and high bandwidth - windows 2012r2

Hello,
   first question here...
We have a pair of backup servers, connected with a 1G WAN link (290 ms latency).
I am replicating backup files (mainly SQL files) between them (one-way), for DR/BCP purposes.
a Get-DfsrState regularly shows hundreds of files in waiting state, and only 16 or so being downloaded at the same time. The system is using very little bandwidth, much less than what I have set in the replication properties (256mbps)
Is there any parameter I can tweak to increase the number of files being transferred in parallel copies?  
Before you ask, the WAN circuits are fine and currently ~80% free. I can easily saturate them using other technologies (rsync, gluster, HTTP). The servers are doing very little as well (2x6C, 32G ram, lots of disks, CPU usually under 10%).
Any idea on how to speed this up? I saw some registry settings in old articles for windows 2008r2, but nothing for 2012r2.
Thanks

Hi,
It seems that the number of downloading files is not related to bandwidth.
By default, a maximum of 16 (four in Windows Server 2003 R2) concurrent downloads are shared among all connections and replication groups. Because connections and replication group updates are not serialized, there is no specific order in which updates are
received. If two schedules are opened, updates are generally received and installed from both connections at the same time.
For more detailed information, please refer to the thread below:
DFSR to Multiple sites over slow bandwidth links
http://social.technet.microsoft.com/Forums/en-US/aedfc06d-9ffa-408c-8852-08fb14c115f0/dfsr-to-multiple-sites-over-slow-bandwidth-links
Regards,
Mandy
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    I’m glad to be of help to you!
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