First I want to say that Enhanced-CTorrent is simply the absolute BEST client around!!!!
I use NSLU2 UnSLung 6.10 Enhanced-CTorrent dnh3.3.2 ctcs 1.4.1
With one or more torrents downloading from high speed seeders running CTCS set all torrents Shared-DL and Minimum-DL Maximum-DL set to 0 [ 0 to disable/remove a limit ] and global bandwidth set plenty high enough to accommodate.
What happens is that after an indeterminate period of time ( typically 30 minutes to several hours) one ( or more ) torrent(s) will slow to 8kB/s or less. IF now disable Shared-DL on all and set Current.Limit-DL to 0s the download speeds are OK.
If set to Shared-DL on any of the slowed/stalled torrent the 8kB/s limit returns. Backed to disabled Shared-DL download speed OK again.
This has been confirmed over a period of several months on 2 separate NSLU2s at different locations/IP providers and different trackers.
The UpLoad dynamic management has never encountered any problems.
With Shared-DL on and setting the Minimum-DL to anything greater than 8kB/s always results in an 8kB/s or less speed with any of the slowed torrents.
With Shared-DL off and setting the Current.Limit-DL to anything greater than 8kB/s always results in an 8kB/s speed or less with any of the slowed torrents.