When your Internet connection is congested (most or all of its allocated bandwidth is used up) either from time to time, or most of the time, Quality of Service (QoS) is a mechanism for you to prioritize bandwidth usage based on network tasks and applications.
However, if your Internet connection is not congested most of the time (allocated bandwidth is hardly used up), it is advisable for you to turn off QoS function. This is because QoS won't make your Internet connection become faster, as your Internet connection is limited by your ISP allocation of maximum upload and download bandwidth. In fact, enabling QoS will incur additional workload to your router and your local network.
QoS is essential for a congested network to ensure that certain network tasks and applications will not be severely affected by the congestion by giving priority to their network traffic, at the sacrifices of those with lower priority. Turn on QoS when your Internet is congested will give you a better Internet experience if you configure it properly.
Bear in mind that QoS normally won't work together with Hardware Acceleration. Enabling QoS will cause the router to automatically shut down partial or all of the Hardware Acceleration function.
In the Asuswrt and Asuswrt-Merlin Game Boost screen, there is a LAN Boost - One Click Game First mode. That is actually a short cut to an adaptive QoS setting that turn on adaptive QoS and set Online Gaming with the highest priority of all network traffic. If you want to give the highest priority to other tasks such as Media Streaming instead of Online Gaming, make sure you turn off this LAN Boost - One Click Game First mode.
When you click into the Adaptive QoS menu, you will be presented with the Bandwidth Monitor screen. This screen is functioning regardless QoS is switch on or off in your router. It is a very useful screen to tell you the real time bandwidth usage of your network between the router.
Upload Bandwidth and Download Bandwidth is visually shown in the form of a speedometer. From this display, you can immediately know whether your Internet link is congested or not.
The same information is also obtainable in the Asus Router mobile apps connected to the router.
Below it is a list of hosts connected to the router, and their real time upload and download bandwidth usage respectively.
If you turn on Apps analysis, you can click on the icon of any of the hosts, and the screen will show a breakdown of bandwidth usage by the applications running in the host.
If you would like to turn on QoS function, recommended settings are as below:
- QoS type: Adaptive QoS
- Bandwidth Setting: Automatic Setting
- Queue Discipline: fq_codel
- WAN packet overhead: select the correct preset according to your Internet connection type
You can then determine which kind of applications are going to have the highest priority to access the Internet: Games, Media Streaming or Web Surfing.
If you choose Customize, you are given control to customize the priority among the following traffic types:
- Gaming
- Video and Audio Streaming
- VoIP and Instant Messaging
- Web Surfing
- File Transferring
- Others
If you have QoS enabled, you can view the QoS Statistics screen to have an idea of the bandwidth usage by each of the traffic types.
Web History records down a log on the websites visited by the hosts. I find it no harm to enable or disable it. Even if you disabled it, it seems that the logging still be ongoing behind the scene. I also noticed that this Web History does not display every single website visited by the hosts.
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