Atheros Qualcomm qca9377 issue ! please help

[majd_khalefa_98]

so i bought new Lenovo Laptop the ideapad 330 81DE , i have internet issue , i sit in my room and the router is like next room , i dont get enough speed , i cant surf with fast internet , tho with my other devices i can surf like with my phone and other laptops ... i get like 5 mbs , otherwise my other devices get like 20-30 mbs , i searched online for this problem and found that the Card Qualcomm Atheros QCA9377 have this problem , i found this thread : http://www.tomshardware.co.uk/answers/id-2753464/atheros-qualcomm-qca9377-802-compatibility-issues.html
i looked up on the solutions and found a suggested solution is to disable QOS/WMM feature in the router might fix the problem , but my router doesn't have those features , i searched in every setting in my router settings and i couldnt find anything , what should i do ? please anyone can help ?
i have the latest drivers .

 

[majd_khalefa_98]

Please help