Deco X50-5G Beta Request: Memory Leak under heavy load

Deco X50-5G Beta Request: Memory Leak under heavy load

Deco X50-5G Beta Request: Memory Leak under heavy load
Deco X50-5G Beta Request: Memory Leak under heavy load
Thursday
Model: Deco X50-5G  
Hardware Version: V2
Firmware Version: 1.1.1 Build 20250922

Hello TP-Link Support Team and Community,

I am writing to report a specific firmware optimization issue and to request a Beta Firmware if one is available. I am using a Deco X50-5G (Firmware Version: 1.1.1 Build 20250922 Rel. 17577) and I am experiencing network crashes due to what appears to be a memory leak or poor NAT session management under extreme loads.

 

The Issue:

When I use the network for typical tasks, everything works flawlessly. However, when I push a heavy multi-connection load—specifically streaming via OBS Studio while simultaneously playing Microsoft Flight Simulator 2020 (which constantly downloads photogrammetry data)—the router eventually chokes. After about 3 hours of this continuous heavy load, the internet connection drops completely, forcing me to reboot the Deco.

 

Our Diagnosis & Proof:

We isolated the issue to the router's software struggling to manage thousands of concurrent micro-connections (NAT sessions), causing the RAM to fill up and crash the connection.

To prove this, I routed all my PC's traffic through a VPN (Cloudflare WARP). By tunneling everything into a single secure connection, the Deco only had to manage one active session instead of thousands. With the VPN ON, the router handled a 6-hour continuous stream flawlessly, with CPU Load resting at 14% and Memory Usage perfectly stable at 42%.

 

The Request:

1.Since the hardware is clearly capable and the issue is strictly related to how the firmware handles massive NAT session tables / memory allocation, is there a Beta Firmware available for the X50-5G that optimizes this specific issue?

2. Just to be safe, if a Beta is provided and it doesn't work well for my setup, can I easily downgrade back to the current official firmware using the Web UI?

Thank you in advance for your time and support!

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2 Reply
Re:Deco X50-5G Beta Request: Memory Leak under heavy load
7 hours ago

  @DarkPantherGR 

Hi,
Please provide more details about the reported phenomenon.

1. How many Deco nodes do you have? Please describe your network diagram in detail.
2. When the Deco network has no internet, what's the LED status on it?
3. Is the Deco X50-5G connected to a modem/router or SIM card to go to the internet? If it's connected to a SIM card and encounters the reported phenomenon, can you connect it to a modem/router to go to the internet and test if the phenomenon will happen?

Best Regards

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Re:Deco X50-5G Beta Request: Memory Leak under heavy load
2 hours ago

  @Solla-topee 

Hi, thank you for the quick response! Here are the details you requested:

1. Network Diagram:

I only have ONE Deco node (the main Deco X50-5G). I do not use a mesh setup with other nodes. My main PC (which runs the stream and the game) is connected directly to the Deco via Ethernet cable. There are just a couple of mobile phones connected via Wi-Fi, doing nothing heavy.

2. LED Status:

When the internet connection drops after the 3-hour heavy load, the LED on the Deco remains solid white. The router seems to think it is still connected and operating normally, but I cannot access any webpage or service, and I have to manually reboot it to restore the connection.

3. Internet Source & Testing:

The Deco X50-5G is acting as my primary and ONLY internet gateway, connected directly via a 5G SIM card. I do not have another DSL/Fiber modem/router at my location with enough bandwidth to replicate this extreme stress test (Streaming OBS + MSFS 2020 photogrammetry simultaneously). Therefore, I cannot test it simply in "Wireless Router mode" behind another modem. The crash happens specifically when the Deco's 5G modem and firmware try to handle thousands of NAT sessions directly through the cellular network. As mentioned, routing the traffic through a single VPN tunnel (Cloudflare WARP) completely prevents the crash, which points directly to a NAT session/memory leak issue on the 5G routing side.

Looking forward to your insights!

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#3