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VPN client on Deco very slow compared to each device. firmware problem?

VPN client on Deco very slow compared to each device. firmware problem?

VPN client on Deco very slow compared to each device. firmware problem?
VPN client on Deco very slow compared to each device. firmware problem?
2025-04-09 17:03:35 - last edited 2025-05-08 10:00:58
Tags: #NordVPN
Model: Deco X50  
Hardware Version: V1
Firmware Version: 1.6.4 Build 25011612 Rel. 44161

Hello,

My usual internet speed is about 340Mbps download and 340Mpbs upload.  I configured NordVPN as vpn Client in the router and enable it to my phone (as example ). I noticed speed dropped to ~40Mpbs! Same thing applies to other devices (laptop, desktop etc)

 

When I use NordVPN directly to my phone speed is about ~220Mbps. Is it as it should work? I was wondering if it's firmware related too. I think before the last update speed was around ~70. Still huge drop but now it's even worse...

 

While running speed tests through Deco's vpn I see Deco's CPU at 100%. No idea if it helps and don't know how high it was before the update .

 

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Re:VPN client on Deco very slow compared to each device. firmware problem?-Solution
2025-04-10 06:42:35 - last edited 2025-05-08 10:00:58

  @teoB0 

 

Hi, welcome to our community.

The speed performance of your Deco network acting as a VPN client is normal before or after firmware update, because TP-Link router CPUs cannot handle VPN encryption as quickly as a computer acting as a VPN client. When an encrypted tunnel is established between the router and the VPN provider, it adds overhead to the router's processer/resources, resulting in a drop in performance, which also means a drop in WAN to Internet throughput.
If you want to get a higher speed performance, you can try the below methods:
1. Use a better VPN protocol, such as Wireguard > Openvpn > PPTP/L2TP
2. Adapt UDP protocol in Open vpn.

BTW, you may try the pre-release version from the thread: Deco X50/X55_V1_1.6.7 Optimized the Client Network Stability
Thank you and best regards.

 

Check Out the Latest Posts: Archer GE550 - BE9300 Tri-Band Wi-Fi 7 Gaming Router EasyMesh Is Available When Wi-Fi Routers Work in AP Mode as A Controller. Archer BE550 New Software Enhances System Stability and Optimizes MLO Network Stability. TL-WA3001 Supports EasyMesh, Speed Limit, Guest Network in AP Mode and/or Multi-SSID Mode.
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Re:VPN client on Deco very slow compared to each device. firmware problem?-Solution
2025-04-10 06:42:35 - last edited 2025-05-08 10:00:58

  @teoB0 

 

Hi, welcome to our community.

The speed performance of your Deco network acting as a VPN client is normal before or after firmware update, because TP-Link router CPUs cannot handle VPN encryption as quickly as a computer acting as a VPN client. When an encrypted tunnel is established between the router and the VPN provider, it adds overhead to the router's processer/resources, resulting in a drop in performance, which also means a drop in WAN to Internet throughput.
If you want to get a higher speed performance, you can try the below methods:
1. Use a better VPN protocol, such as Wireguard > Openvpn > PPTP/L2TP
2. Adapt UDP protocol in Open vpn.

BTW, you may try the pre-release version from the thread: Deco X50/X55_V1_1.6.7 Optimized the Client Network Stability
Thank you and best regards.

 

Check Out the Latest Posts: Archer GE550 - BE9300 Tri-Band Wi-Fi 7 Gaming Router EasyMesh Is Available When Wi-Fi Routers Work in AP Mode as A Controller. Archer BE550 New Software Enhances System Stability and Optimizes MLO Network Stability. TL-WA3001 Supports EasyMesh, Speed Limit, Guest Network in AP Mode and/or Multi-SSID Mode.
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