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How to fix Sonicwall VPN internet speed slow issue

by Amar Singh October 31, 2023
Windows 11

Discover effective solutions to resolve slow internet speed issues when using SonicWall VPN. Improve your VPN performance with our step-by-step guide.

My internet connection speed is 50 Mbps. when I work for my client by using Sonic Wall Global VPN. I observed that Internet speed is working slow and then I checked internet speed on www.speedtest.net and found that my upload showing 0.79 Mbps and upload showing 47.27 Mbps as shown in below image. and then when I disconnected VPN my internet is working fine.

Sonicwall VPN

You can fix it by following below steps : –

  1. Open CMD with Run As Administrator
Sonicwall VPN

2. Run the below command

Powershell Get-Netadapte

From Above command you can list all Network Adapter.

Powershell Get-NetadapterRSC

You can find RSC is true or false for IPv4 and IPV6 and also find Wi-Fi Name, in is my case name is Wi-Fi 2. if it is show true then you need to disable it by below command.

Powershell Disable-NetadapterRSC -Name Wi-Fi

Example: –

Sonicwall VPN

Now you can see Download speed issue has been fixed.

Sonicwall VPN