Model : TL-WR84TL-WR841N

Hardware Version : TL-WR841N v13 00000001

Firmware Version : 0.9.1 4.16 v0001.0 Build 170622 Rel.64334n

ISP : BGWan

Greetings,dear members of this forum.
I recently bought that router,because my old WR740N was having often problem with losing internet connection,and a bit of low coverage in my home.
So,I bought WR841N ,v13 ,and immediately update the firmware-now it is from 07.07.17.
The device is working fine,more speed in my home network and more coverage.No problems with losing internet.
But I saw that my torrent client uTorrent is uploading with slow speed,when active is my personal computer,connected to router via LAN cable. With my notebook which is HP Elitebook 2570p there is no low speed of upload when connected via Wi-Fi. So,I tried to connect the notebook via LAN cable,and the speeds immediately dropped.
I ran a speedtest,these are the results

With cable...




Via Wi-Fi....





So,you see what is the situation. What can I do to improve the upload speed? Thanks prliminary.
Greetings.