Wi-fi problem with the distance of the router

Hi, this pc/tablet is really amazing but i encountered a problem with wifi.
From my bedroom (5meters from the router) the wifi drop in quality as much as one line of power and the speed drop as much as 2mbps. (i have a 10mbs) if i am close to the router work good as my other device but from my bedroom is impossible to watch video stream in HD. i already updated the driver to the latest release (intel ac9461) and modified all power setting to let the wifi have maximum power all the time but continue to not work. there is any solution or the wifi is really that not so powerful?
Thank you in advance

I have the same problem. It has worse signal than a mobile phone 5years old…