Update and Solution about the +250ms Bufferbloat Issue with the VX800v (Status: 15 March 2026)

I am the original user who created this thread, and I wanted to give an update about what happened since then and how I finally solved the problem.

1. Support and Firmware Updates
On 09 July 2025, about two months after my original post, I received an email from the engineering team.

They reduced my bufferbloat from over +250 ms to about +110 ms using a beta firmware that was specially adjusted for my device (VX800v)

This did not solve the problem completely, but it improved it.
 

Later, on 12 December 2025, I received another exclusive firmware update (version 800.0.16) from the engineering team.

This update included a latency optimization for the DSL modem inside the router.

Result:

 
Before: about 150–250 ms Bufferbloat, After the update: about 100 ms

This is definitely an improvement, and I want to thank the engineering team for their help and testing.
The technical support also told me: "These adjustments are the result of extensive testing to achieve the best possible outcome."

In other words, it is unlikely that the latency will improve further than this.

2. My Own Tests
Because I was still not satisfied, I decided to look for my own solution.

Test with an External DSL Modem
First, I wanted to check if the DSL modem inside the VX800v might be the problem.
 

So I: disabled the modem inside the VX800v and used a separate DSL bridge modem

Result: 

The latency dropped from 100 ms to about 80 ms. this is about 20ms improvement.

This showed that the problem is not only the modem, but also the router software.

3. Switching to an OpenWrt Router
After that, I bought a router that supports OpenWrt.

I installed: OpenWrt 24.10.5
 

With the correct settings I was able to completely remove bufferbloat.
No bufferbloat, Stable latency And Gaming, video, and uploads at the same time without ping spikes 🎮

4. Final Result
I was only able to fully solve the problem by using:

a separate DSL modem

and an OpenWrt router
 

Now the bufferbloat is completely gone and the connection is stable.