This quick fix will make a Wi-Fi router give your device 'VIP treatment'
Briefly

Called quality of service (QoS), it's a setting that allows users to devote priority to internet bandwidth where they see fit.
The Quality of Service feature won't miraculously make all devices on your network lightning fast. It still depends on your internet package's initial speed... Think of QoS as an extra layer of optimization.
Read at New York Post
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