PC showing lower download speeds even with Ethernet

Optimizing Network Performance: Troubleshooting Slow Download Speeds on Your Windows 11 PC

In today’s digital landscape, experiencing slower-than-expected download speeds can be frustrating, especially when your internet plan promises higher bandwidth. If you’re encountering reduced download rates on your Windows 11 PC despite having a robust internet connection, this guide will help you identify potential causes and solutions.

Understanding Your Setup

Let’s review the typical hardware and network configuration involved:

Processor: Intel Core i7-8700K
Graphics Card: ASUS ROG Strix GTX 1080
Motherboard: ASUS ROG Strix Z370-E Gaming
RAM: 32GB DDR4 Corsair

Your PC is connected to the internet using a TP-Link Powerline Adapter with a Category 5 (Cat 5) Ethernet cable. Notably, your PlayStation 5 located in the same room achieves the full 50 Mbps speed, indicating that the internet connection itself is functioning correctly.

Identifying the Issue

Despite the plan, your PC’s download speeds via Xbox/PC Game Pass range between 10-20 Mbps, with speed tests yielding a mere 4 Mbps. Several factors could contribute to this discrepancy:

Hardware Limitations or Misconfiguration
Network Adapter or Driver Issues
Powerline Adapter Performance
Software or Background Processes Impacting Speed

Troubleshooting Steps

Verify the Network Hardware
Confirm whether your PC has a dedicated Wi-Fi card. If not, ensure the Ethernet connection is stable.
Test the Ethernet cable and port for potential faults by substituting with a different cable or port.
Optimize Powerline Adapter Connection
Powerline performance can vary based on household wiring and interference. Try connecting the PC directly to the router via a wired connection if possible.
Reset the Powerline Adapter and ensure both units are on the same electrical circuit.
Update Network Drivers
Check Device Manager for outdated or missing network adapter drivers.
Visit the motherboard manufacturer’s website for the latest Ethernet drivers compatible with your ASUS ROG Strix Z370-E motherboard.
Use Windows Update or third-party driver update tools if needed.
Adjust Network Settings
Disable any VPNs or firewalls temporarily to test their impact.
Ensure the network adapter is configured for optimal performance settings, such as enabling “Traffic Control” and turning off “Power Saving Mode.”
System and Background Processes
Close unnecessary applications that might be consuming