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Taking vpn server "online" slows down the ethernet connection quite a bit

Posted: Mon Sep 09, 2019 5:18 pm
by oneduality
I'm running the Softether VPN server on a windows 10 machine and I have a 400Mbps link using Spectrum internet, I usually get about 320-330Mbps out of that using, sometimes I can spike up to 380Mbps

If I take Softether "online" so that it's simply listening for VPN connections, my speed will drop consistently to below 300Mbps just by taking the virtual hub online, this doesn't really impact my upstream speed but it definitely slows down my download stream. My speeds go to about 260-280Mbps with Softether's hub "online"

This is without ANY vpn clients connected at all, I use Softether so I can connect via my iPhone when I'm not there or on a trusted network

Any idea why the simple act of enabling the virtual hub would cause this? I have no other ethernet device on that system, I don't have wifi on there either. Just the onboard realtek 1gb ethernet port.. That seems like a hefty drop in speed for just enabling the hub

Re: Taking vpn server "online" slows down the ethernet connection quite a bit

Posted: Tue Sep 10, 2019 12:33 am
by oneduality
I should add my specs

I'm running an AMDFX 8350 8 core system, overclocked to 4ghz
32gb of ram
10tb of storage
Windows 10 Enterprise, 64 bit .. Version 1809

The system is never under any load unless I'm gaming or something.. it's not a CPU/Memory issue.. and again, it only slows the internet down when I enable the virtual hub, the moment I disable it I'm full speed again.