I'm running Xubuntu 18.04.3 and facing an extremely low bandwidth in my house's WiFi. It's not any sort of issues with the router since I do get 200 Mb/s of download and 100Mb/s of upoload rates when using Windows 10.

Here's the result I got from the wireless script: https://pastebin.com/Av7hnw1M

Thanks in advance.