Does QoS Slow Down Internet? (Answered)


Does QoS Slow Down Internet?

With increasing business operations, the existence of IP networks is increasing at a significant rate. The IT infrastructures and networks are using cutting-edge routers but still, the internet speed slouches down. You might not know this but internet routers have QoS (quality of service). It is supposed to create higher prioritizations for internet traffic.

The QoS is designed to offer beneficial features but the reality is somewhat different. That’s because people have been complaining about misidentified devices, and also, it adversely impacts the upload speed as well. It’s needless to say that QoS had to be beneficial but the practicality interprets differently. QoS tends to slow down the internet and upload speed.

The Methodology Behind QoS

The quality of service is integrated with algorithms. These algorithms will depict if a particular device demands higher network signals. Once the service creates device prioritization, it will deliver optimized speed as per the user’s needs. The QoS is designed with a UDP protocol that promises there is no data packet loss in the transit.

This is because QoS offers management and compensation for data packets. It promises zero jeopardization or delays in the network. The quality of service is being implied by businesses that have Cisco or VoIP phones. These devices tend to utilize lower bandwidth and other devices will have adversely impacted internet speed.

The QoS can be integrated into the server that sends out the local signals, but also, businesses have been configuring quality of service on the internet router. However, it’s still implied under a traditional network infrastructure, posing slouching internet speed. This tends to erase out the entire purpose of QoS.

LAN & WAN Discrepancy

Internet users need to identify the throttle speed of the network. In the majority of cases, ISP is the startling point and the businesses tend to order a certain bandwidth that can be divided into the business devices. When it comes down to LAN devices, the users need to decide the prioritized traffic.

In contrast, the WAN decides which devices will get the prioritized signals. It’s essential to note that WAN and ISP should be compliant because higher WAN bandwidth won’t settle with limited ISP.

Routers & QoS

The users need to understand that different routers have variations in the QoS configurations. For instance, there are low, medium, and high priorities available. Also, there are some routers that allow the users to specify the specific bandwidth.


If you haven’t properly balanced or configured the QoS, it can negatively impact the internet speed. In addition, the performance will be jinxed as well. It is advised to line out the IP address or Mac address while configuring the quality of service.

The Downsides of QoS

Many people have been complaining about the QoS slowing down the internet speed. It’s already said that the quality of service is designed to optimize performance and internet speed. However, QoS poses these negative impacts in no two scenarios; network unclogging and bandwidth increase for the following reasons;

  • Network Unclogging – if there are different apps running in the background, configuring QoS will not help. That’s because QoS won’t solve the real problem, thus any improvement in the performance. So, you need to close down the rogue apps rather than blaming the QoS
  • Bandwidth Increase – Let’s get the concepts straight because increasing the bandwidth isn’t the feature of QoS. In this case, it is advised to check the files and data cache. So, remove the cache and it will remove the extra data, thus improving the internet speed and router performance

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