@Joseph-TP 

Also, you previously sent me the firmware, and I was able to roll back to version 1.0.14 successfully.

 

Hi  @Alohomora, 

I see you were able to roll back to 1.0.14, that’s great.

 

Just wanted to mention that this version is affected by CVE-2025-40634 — a DNS response overflow vulnerability that can be exploited remotely.

 

Through this flaw, an attacker could modify DNS responses, redirect traffic (phishing), or perform man-in-the-middle attacks.

 

If you’d like to read the technical details and see the exploit, you can check:

 

https://github.com/hacefresko/CVE-2025-40634

 

I upgraded to 1.0.16, since it apparently fixes the issue and has been stable in my case.

 

I also mentioned it here:

https://community.tp-link.com/mx/home/forum/topic/824772

 

Just sharing this so you can make an informed decision.

  @Joseph-TP 

 

I've got technically only 1 device for the cable connection, this is however a 2.5gigabit switch. So in theory there's about 7 devices with cable connected in my network and about 30+ wireless clients.

 

My ISP is Ziggo (Dutch Liberty Global), on a 1.1gigabit connection. Using the Ubee UBC1318ZG modem, on dynamic IP.

Everything is CAT8 cables and 2.5gigabit connections (besides the modem and router itself).

 

Like I said in my other post, it used to run 1gigabit flawlessly. I reckon the new firmware is using more CPU as I can see one of my cores on the router being fully used when I stress the connection. So whatever you guys did with the algorithm for the new parental controls (idk if you put some low level ai on it or so) is taking up too much CPU cycles, maybe the package analyzer. At least that's how it looks like. (I've got no parental controls enabled btw)

 

This is idle:

 

This is when I'm speed testing

As it shows, one of the cores is almost maxed out during the speedtest. Since this only updates every 10(?) seconds, it's not realtime obviously but it's clear there's an issue with load on the CPU.

 

I've tried multiple setups, but the 2 most important onces are quite powerful hardware (5800x3D/RTX3080, 2700x/RTX2080) with 2.5gigabit ports, both show the same issue. 

 

 

This is the speed that I used to get (this is March this year):

 

 

And this is what I currently get, with the exact same setup:

 

 

I've confirmed that with the router out of the network, the connection speed is as shown here: