Very slow VPN speed on Flint2

Technical Support for Routers VPN, DNS, Leaks
1

Hi,

I have a great speed problem with Flint2 while using VPN.

Without VPN it works well.

Situation BEFORE Flint

  • Standard router of my service provider: ADB Crow Ax5400.

  • Speed test WITHOUT Wireguard made with Speedtest.net: about 100/20 Mbps

  • Speed test WITH Wireguard made from the same site: about 70/18 Mbps

Note: the Wireguard server is a VM on Proxmox on the same lan.

Situation AFTER Flint

  • Speed test WITHOUT Wireguard made from the same site: about 100/20 Mbps

  • Speed test WITH Wireguard made from same site: about 20/18 Mbps

The download speed dropped down dramatically.

Note: tested both internal Flint2 Wireguard server and my personal VM Wireguard server, same results.

The problem seems to be in Flint2.

2

I don’t supose you have a WG conf for a provider like Mullvad, IVPN, Surfshark, etc.? Something is defiantly off. My Flint v1 gets 115 Mbps down over WG, easily.

3

No VPN client activated on Flint, no commercial VPN provider.

4

Yeah, I just don’t know then. Even the cheapest I’ve seen, Surfshark, advertises 1 Gbps locations but if you don’t have one, you don’t have one. Do you have a spare machine that you can boot a live USB & set up a WG peer to hardline to the Flintv2 via its auto-generated confs? WG is technically all P2P so it shouldn’t technically matter if the Flintv2 is the ‘WG Server’ in a S2S as long as the routes are good. See below for a template:

You could also check by & even self host Open Speed Test.

5

Did you ever figure out the problem? I just got the Flint 2 and also have much slower speeds with VPN compared to my old Flint 1. 4mbps vs. 10mbps using openvpn.

6

Both values are pretty low, how much speed provides your ISP?