Slow wifi connection on Linux

[blagamihai17]

I have recently installed Ubuntu 18.10 on my laptop. I tried to install the LTS version first but the wi fi wouldn't work. Now after I updated my Linux it works but very slow(max 400 kb/s speed when on Windows 10 I have 3-4 mb/s).Sometimes the wi fi on Linux stops randomly and i got very bad signal even near my router. Any advice?

 

[blagamihai17]

Laptop: Kiano Elegance 14.2
OS: Ubuntu 18.10
SSD 120 GB
Dual Boot with windows 10 pro
4GB Ram
It doesn't have ethernet only Wifi, ironically I used an usb wi fi adapter to connect firstly to wifi to update linux beacuse otherwise the wifi wouldn't work

 

[Alabalcho]

From shell prompt, execute and post results for
$ lsusb
$ lspci

And from Windows installation - what are VID, PID values for your WiFi adapter?