@zageng 

Good Day,

Thank you very much for your feedback.

Please refer to the following information:

1. All 4 LAN ports on VR400 are 10/100/1000Mbps RJ45 Ports,

For the DSL rate issue, you have attached 4 pictures, so I guess the first one is from the Huawei ISP router, and the 2^nd is from VR300, the last two are from VR400?

1. All the 3 routers are tested under the same DSL line, right?
2. Who is your internet service provider and what kind of connection did you use Dynamic IP, or PPPoE?

After that, please refer to the following suggestions:

1. Reset the modem once, then remove the DSL splitter if there is any;
2. Update the firmware of the VR400 to be the latest one: ArcherVR400(EU)_V2_200706

https://static.tp-link.com/2020/202007/20200717/Archer_VR400(EU)V2_200706.zip

Thank you~

@zageng 

Good day.

Sorry for the delay.

Since you mentioned that ‘same lines’ and ‘2 lines in 2 different areas in my town from 2 different MSAN cabins’, so I guess even though there are two different locations, the DSL service type is the same and also from the same internet provider?

Have you swapped the location of the VR400 and VR300 to see if there are already lower DSL upstream and downstream info?

And I noticed that on the VR300, the DSL Annex type is Annex A/L/M; while on the VR400, it is only Annex A.

So if possible, please try to change it to the Annex A/L/M to see if that helped;

Later we might need to follow up on your case via email for further assistance.

Thank you very much and have a nice day.

@zageng 

Good day.

Our engineers already follow up your case via email.

Have you get any email from us # [TP-Link Support #512038]: Forum -221146

Thank you very much!