I am on TOS6 HBD, not sure if related to this, anyway i have constant problem with copy performance between devices. I have 2 devices, one on cable, second on wifi, if i copy from wifi device to cable device, performance is OK. But if i do it vice versa, the performance drops dramatically to cca 1 MB/s. Time to time that problem disappeared, i tried to make lot of tests to investigate, with different devices, but i did not find where the issue comes from.
Is there some hint, what to check? If i start bigger file to copy on that slow speed - the network generally is almost dead, i am not sure, what exactly check/monitor.