FTP over Wi-FI in Android, standard n - low speed

Question

Android

Samsung Galaxy Note 3
OS and firmware: Android 4.3, official

Description of the problem:
File transfer is only 200-300 kb / s, although the n protocol supports much more. How so?

Actions taken:
Tried different software, e.g. SwiFTP, ES explorer

Answer 1

check the speed with speedtest, maybe it's in the router itself

Answer 2

How many files and how big are they?

Answer 3

And how does WiFi File Explorer Pro behave?

Answer 4

Measure the connection speed via iperf, this will reduce the impact of restrictions on reading / writing to the phone's hdd / flash. By the way, the latter is unlikely to write faster than 10Mbps, so the file download speed will be no more than 1.25MBps.

Answer 5

Something like this.

Answer 6

Often, this is due to Android's power saving settings, usually in FTP applications there is a checkbox like "keep the screen on" or something similar, try it.