Slow Connection

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Posts: 2
Joined: Tue Jun 11, 2019 9:01 am

Slow Connection

Post by nico2001 » Tue Jun 11, 2019 11:46 am

The tests are still not OK - very poor performance. Maybe it's because my machines are located in Europe?
The other features of SoftEther are great but the product is not usable for the end users due to the slow throughput.
Is there any alternative to SoftEther?
Thanks in advance

Hi !
My connection is very, very slow.

Maximum transfer speed for a 18 MB file copy: 85 kbps (yes, it’s poor…)

Here are the details of my SoftEther configuration (server side and client side)

SoftEther Server :

Throughput on Server side :

Ping : 2 ms
Down : 72 mbps
Up : 80 mbps

SoftEther VPN Server: Win 2012 R2, 8 GB RAM, Intel Xeon CPU E5-2420 v2 2.2 Ghz
LAN IP address :
SecureNAT is disabled
SoftEther VPN used on server side on port 443
Encryption is disabled

SoftEther Client :

Throughput on Client side :

Ping : 4 ms
Down : 92 mbps
Up : 91 mbps

SoftEther VPN Client (Ver 4.29, Build 9680, rtm)
Client desktop Win 7 Pro, Intel Core i7, 16 GB RAM
LAN IP address :
VPN Adapter dynamic address :
SoftEther Client VPN set up on port number : 443
NAT-T is disabled
Number of concurrent TCP connections : 16
Disable UDP acceleration is left unchecked (ckecking it get the things worse!)

Network traffic test speed tool (file attached)
Nothing particular in the three log files on the SoftEther VPN server.

I also tried to connect from a SoftEther Client from another high-speed location, on a Windows 10 Pro desktop. Same issue.

Any ideas?
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Posts: 2458
Joined: Mon Feb 24, 2014 11:03 am

Re: Slow Connection

Post by thisjun » Mon Jun 24, 2019 5:14 am

What is the Ping value between the client and the VPN server?

How to transfer the file?

Posts: 2
Joined: Tue Jun 11, 2019 9:01 am

Re: Slow Connection

Post by nico2001 » Sat Sep 07, 2019 9:43 am

The ping is very bad : around 500 ms as you can see:

Envoi d'une requˆte 'Ping' avec 32 octets de donn‚esÿ:
R‚ponse deÿ: octets=32 temps=1439 ms TTL=128
R‚ponse deÿ: octets=32 temps=482 ms TTL=128
R‚ponse deÿ: octets=32 temps=473 ms TTL=128
R‚ponse deÿ: octets=32 temps=506 ms TTL=128

Statistiques Ping pour
Paquetsÿ: envoy‚s = 4, re‡us = 4, perdus = 0 (perte 0%),
Dur‚e approximative des boucles en millisecondes :
Minimum = 473ms, Maximum = 1439ms, Moyenne = 725ms

Posts: 5
Joined: Fri Aug 23, 2019 1:11 pm

Re: Slow Connection

Post by Mcicool » Mon Sep 09, 2019 1:39 pm

How is CPU load on SE server?

Posts: 1
Joined: Fri Sep 13, 2019 7:21 am

Re: Slow Connection

Post by brunogillan » Fri Sep 13, 2019 7:25 am

The ping is very bad
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