Traffic Control on the ReadyNAS

I'm running Neorouter VPN Server and Client on the ReadyNAS Ultra for the purposes of remote access. This works well for SSH, and Files Share Access however when a large file copy is in progress over the nrtap interface (interface used by neorouter) the internet facing network suffers greatly, download mainly but i don't know why... should only be upload in my opinion. What i would like to do is use traffic control (tc) to slow down traffic through the neorouter interface to match what my internet upload speed is and try not to saturate the router or upstream devices. I'm unable to locate a .deb package to install on the readynas device.

https://wiki.debian.org/TrafficControl#Queueing_Disciplines