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Hello,

I am on a Gig download line (routinely tests between 800 mbps and 1.1 gbps), and I know that I shouldn't expect nearly that much in terms of throughput with a VPN, I have been seeing significantly lower speeds than I feel I should.  Speed tests with the VPN on show generally around 60 mbps, so we are talking 5% of the top end of my speed.

I am running it on Windows 10 Pro machine with the latest updates.  Fully wired all the way through the modem.  My CPU does have AES-NI support, and plenty of power to run a solid VPN connection.

I've done a lot of searching on the forums and tried just about everything that was current.

Things I have tried:

  • Ensuring that I am using a tls-crypt-enabled server
    • I have no reason to believe this is due to traffic-shaping
  • Increasing buffer frame size
  • All the different protocols and ports (UDP, TCP, SSH, SSL, etc)
  • OpenVPN 2.5 with wintun through Eddie
  • OpenVPN 2.5 with wintun through the OpenVPN client, connecting to AirVPN servers
  • ChaCha20 servers
  • Reducing encryption to AES-128-GCM
  • Update to latest beta

Please let me know your thoughts.  I have attached my directives and log below.

Here are my custom directives:
windows-driver wintun
ncp-disable
cipher AES-128-GCM


Here is my log:
. 2020.03.29 16:33:29 - Eddie version: 2.18.8 / windows_x64, System: Windows, Name: Windows 10 Pro, Version: Microsoft Windows NT 10.0.18363.0, Mono/.Net: v4.0.30319
. 2020.03.29 16:33:29 - Command line arguments (1): path="home"
. 2020.03.29 16:33:30 - Profile path: C:\Users\Blake\AppData\Local\Eddie\default.profile
. 2020.03.29 16:33:31 - Reading options from C:\Users\Blake\AppData\Local\Eddie\default.profile
. 2020.03.29 16:33:32 - Tun Driver - 0901: 9.24.2; wintun: 0.8
. 2020.03.29 16:33:32 - OpenVPN - Version: 2.5_git - OpenSSL 1.1.0j  20 Nov 2018, LZO 2.10 (C:\Program Files\OpenVPN\bin\openvpn.exe)
. 2020.03.29 16:33:32 - SSH - Version: plink 0.67 (C:\Program Files\AirVPN\plink.exe)
. 2020.03.29 16:33:32 - SSL - Version: stunnel 5.40 (C:\Program Files\AirVPN\stunnel.exe)
. 2020.03.29 16:33:32 - curl - Version: 7.68.0 (C:\Program Files\AirVPN\curl.exe)
I 2020.03.29 16:33:33 - Ready
. 2020.03.29 16:33:33 - Collect information about AirVPN completed
I 2020.03.29 16:33:37 - Session starting.
I 2020.03.29 16:33:37 - Checking authorization ...
! 2020.03.29 16:33:38 - Connecting to Fang (United States of America, Chicago, Illinois)
. 2020.03.29 16:33:38 - OpenVPN > OpenVPN 2.5_git x86_64-w64-mingw32 [SSL (OpenSSL)] [LZO] [LZ4] [PKCS11] [AEAD] built on Dec 23 2019
. 2020.03.29 16:33:38 - OpenVPN > Windows version 6.2 (Windows 8 or greater) 64bit
. 2020.03.29 16:33:38 - OpenVPN > library versions: OpenSSL 1.1.0j  20 Nov 2018, LZO 2.10
. 2020.03.29 16:33:38 - OpenVPN > Outgoing Control Channel Encryption: Cipher 'AES-256-CTR' initialized with 256 bit key
. 2020.03.29 16:33:38 - OpenVPN > Outgoing Control Channel Encryption: Using 256 bit message hash 'SHA256' for HMAC authentication
. 2020.03.29 16:33:38 - OpenVPN > Incoming Control Channel Encryption: Cipher 'AES-256-CTR' initialized with 256 bit key
. 2020.03.29 16:33:38 - OpenVPN > Incoming Control Channel Encryption: Using 256 bit message hash 'SHA256' for HMAC authentication
. 2020.03.29 16:33:38 - OpenVPN > TCP/UDP: Preserving recently used remote address: [AF_INET]68.235.48.110:443
. 2020.03.29 16:33:38 - OpenVPN > Socket Buffers: R=[65536->524288] S=[65536->524288]
. 2020.03.29 16:33:38 - OpenVPN > UDP link local: (not bound)
. 2020.03.29 16:33:38 - OpenVPN > UDP link remote: [AF_INET]68.235.48.110:443
. 2020.03.29 16:33:38 - OpenVPN > TLS: Initial packet from [AF_INET]68.235.48.110:443, sid=1e3e2529 ec770ced
. 2020.03.29 16:33:38 - OpenVPN > VERIFY OK: depth=1, C=IT, ST=IT, L=Perugia, O=airvpn.org, CN=airvpn.org CA, emailAddress=info@airvpn.org
. 2020.03.29 16:33:38 - OpenVPN > VERIFY KU OK
. 2020.03.29 16:33:38 - OpenVPN > Validating certificate extended key usage
. 2020.03.29 16:33:38 - OpenVPN > ++ Certificate has EKU (str) TLS Web Server Authentication, expects TLS Web Server Authentication
. 2020.03.29 16:33:38 - OpenVPN > VERIFY EKU OK
. 2020.03.29 16:33:38 - OpenVPN > VERIFY OK: depth=0, C=IT, ST=IT, L=Perugia, O=airvpn.org, CN=Fang, emailAddress=info@airvpn.org
W 2020.03.29 16:33:38 - OpenVPN > WARNING: 'link-mtu' is used inconsistently, local='link-mtu 1550', remote='link-mtu 1602'
W 2020.03.29 16:33:38 - OpenVPN > WARNING: 'auth' is used inconsistently, local='auth [null-digest]', remote='auth SHA512'
. 2020.03.29 16:33:38 - OpenVPN > Control Channel: TLSv1.2, cipher TLSv1.2 DHE-RSA-AES256-GCM-SHA384, 4096 bit RSA
. 2020.03.29 16:33:38 - OpenVPN > [Fang] Peer Connection Initiated with [AF_INET]68.235.48.110:443
. 2020.03.29 16:33:39 - OpenVPN > SENT CONTROL [Fang]: 'PUSH_REQUEST' (status=1)
. 2020.03.29 16:33:39 - OpenVPN > PUSH: Received control message: 'PUSH_REPLY,comp-lzo no,redirect-gateway ipv6 def1 bypass-dhcp,dhcp-option DNS 10.27.214.1,dhcp-option DNS6 fde6:7a:7d20:17d6::1,tun-ipv6,route-gateway 10.27.214.1,topology subnet,ping 10,ping-restart 60,ifconfig-ipv6 fde6:7a:7d20:17d6::10f8/64 fde6:7a:7d20:17d6::1,ifconfig 10.27.214.250 255.255.255.0,peer-id 5'
. 2020.03.29 16:33:39 - OpenVPN > Pushed option removed by filter: 'redirect-gateway ipv6 def1 bypass-dhcp'
. 2020.03.29 16:33:39 - OpenVPN > OPTIONS IMPORT: timers and/or timeouts modified
. 2020.03.29 16:33:39 - OpenVPN > OPTIONS IMPORT: compression parms modified
. 2020.03.29 16:33:39 - OpenVPN > OPTIONS IMPORT: --ifconfig/up options modified
. 2020.03.29 16:33:39 - OpenVPN > OPTIONS IMPORT: route-related options modified
. 2020.03.29 16:33:39 - OpenVPN > OPTIONS IMPORT: --ip-win32 and/or --dhcp-option options modified
. 2020.03.29 16:33:39 - OpenVPN > OPTIONS IMPORT: peer-id set
. 2020.03.29 16:33:39 - OpenVPN > OPTIONS IMPORT: adjusting link_mtu to 1625
. 2020.03.29 16:33:39 - OpenVPN > Outgoing Data Channel: Cipher 'AES-128-GCM' initialized with 128 bit key
. 2020.03.29 16:33:39 - OpenVPN > Incoming Data Channel: Cipher 'AES-128-GCM' initialized with 128 bit key
. 2020.03.29 16:33:39 - OpenVPN > interactive service msg_channel=0
. 2020.03.29 16:33:39 - OpenVPN > ROUTE_GATEWAY 192.168.1.1/255.255.255.0 I=4 HWADDR=4c:cc:6a:6c:0c:86
. 2020.03.29 16:33:39 - OpenVPN > GDG6: remote_host_ipv6=n/a
. 2020.03.29 16:33:39 - OpenVPN > GetBestInterfaceEx() returned if=4
. 2020.03.29 16:33:39 - OpenVPN > GDG6: II=4 DP=::/0 NH=fe80::a02:8eff:fea6:fa33
. 2020.03.29 16:33:39 - OpenVPN > GDG6: Metric=4096, Loopback=0, AA=1, I=0
. 2020.03.29 16:33:39 - OpenVPN > ROUTE6_GATEWAY fe80::a02:8eff:fea6:fa33 I=4
. 2020.03.29 16:33:39 - OpenVPN > open_tun
. 2020.03.29 16:33:39 - OpenVPN > Wintun device [Local Area Connection 2] opened
. 2020.03.29 16:33:40 - OpenVPN > NETSH: C:\Windows\system32\netsh.exe interface ip set address Local Area Connection 2 static 10.27.214.250 255.255.255.0
. 2020.03.29 16:33:41 - OpenVPN > NETSH: C:\Windows\system32\netsh.exe interface ip delete dns Local Area Connection 2 all
. 2020.03.29 16:33:42 - OpenVPN > NETSH: C:\Windows\system32\netsh.exe interface ip set dns Local Area Connection 2 static 10.27.214.1
. 2020.03.29 16:33:55 - OpenVPN > NETSH: C:\Windows\system32\netsh.exe interface ip delete wins Local Area Connection 2 all
. 2020.03.29 16:33:56 - OpenVPN > NETSH: C:\Windows\system32\netsh.exe interface ipv6 set address interface=3 fde6:7a:7d20:17d6::10f8 store=active
. 2020.03.29 16:33:57 - OpenVPN > NETSH: C:\Windows\system32\netsh.exe interface ipv6 set dns Local Area Connection 2 static fde6:7a:7d20:17d6::1 validate=no
. 2020.03.29 16:33:57 - OpenVPN > add_route_ipv6(fde6:7a:7d20:17d6::/64 -> fde6:7a:7d20:17d6::10f8 metric 0) dev Local Area Connection 2
. 2020.03.29 16:33:57 - OpenVPN > C:\Windows\system32\netsh.exe interface ipv6 add route fde6:7a:7d20:17d6::/64 interface=3 fe80::8 store=active
. 2020.03.29 16:33:57 - OpenVPN > env_block: add PATH=C:\Windows\System32;C:\Windows;C:\Windows\System32\Wbem
. 2020.03.29 16:33:57 - OpenVPN > C:\Windows\system32\route.exe ADD 68.235.48.110 MASK 255.255.255.255 192.168.1.1
. 2020.03.29 16:33:57 - OpenVPN > ROUTE: CreateIpForwardEntry succeeded with dwForwardMetric1=25 and dwForwardType=4
. 2020.03.29 16:33:57 - OpenVPN > Route addition via IPAPI succeeded [adaptive]
. 2020.03.29 16:33:57 - OpenVPN > C:\Windows\system32\route.exe ADD 0.0.0.0 MASK 128.0.0.0 10.27.214.1
. 2020.03.29 16:33:57 - OpenVPN > ROUTE: CreateIpForwardEntry succeeded with dwForwardMetric1=5 and dwForwardType=4
. 2020.03.29 16:33:57 - OpenVPN > Route addition via IPAPI succeeded [adaptive]
. 2020.03.29 16:33:57 - OpenVPN > C:\Windows\system32\route.exe ADD 128.0.0.0 MASK 128.0.0.0 10.27.214.1
. 2020.03.29 16:33:57 - OpenVPN > ROUTE: CreateIpForwardEntry succeeded with dwForwardMetric1=5 and dwForwardType=4
. 2020.03.29 16:33:57 - OpenVPN > Route addition via IPAPI succeeded [adaptive]
. 2020.03.29 16:33:57 - OpenVPN > add_route_ipv6(::/3 -> fde6:7a:7d20:17d6::1 metric -1) dev Local Area Connection 2
. 2020.03.29 16:33:57 - OpenVPN > C:\Windows\system32\netsh.exe interface ipv6 add route ::/3 interface=3 fe80::8 store=active
. 2020.03.29 16:33:57 - OpenVPN > env_block: add PATH=C:\Windows\System32;C:\Windows;C:\Windows\System32\Wbem
. 2020.03.29 16:33:57 - OpenVPN > add_route_ipv6(2000::/4 -> fde6:7a:7d20:17d6::1 metric -1) dev Local Area Connection 2
. 2020.03.29 16:33:57 - OpenVPN > C:\Windows\system32\netsh.exe interface ipv6 add route 2000::/4 interface=3 fe80::8 store=active
. 2020.03.29 16:33:57 - OpenVPN > env_block: add PATH=C:\Windows\System32;C:\Windows;C:\Windows\System32\Wbem
. 2020.03.29 16:33:57 - OpenVPN > add_route_ipv6(3000::/4 -> fde6:7a:7d20:17d6::1 metric -1) dev Local Area Connection 2
. 2020.03.29 16:33:57 - OpenVPN > C:\Windows\system32\netsh.exe interface ipv6 add route 3000::/4 interface=3 fe80::8 store=active
. 2020.03.29 16:33:57 - OpenVPN > env_block: add PATH=C:\Windows\System32;C:\Windows;C:\Windows\System32\Wbem
. 2020.03.29 16:33:57 - OpenVPN > add_route_ipv6(fc00::/7 -> fde6:7a:7d20:17d6::1 metric -1) dev Local Area Connection 2
. 2020.03.29 16:33:57 - OpenVPN > C:\Windows\system32\netsh.exe interface ipv6 add route fc00::/7 interface=3 fe80::8 store=active
. 2020.03.29 16:33:57 - OpenVPN > env_block: add PATH=C:\Windows\System32;C:\Windows;C:\Windows\System32\Wbem
. 2020.03.29 16:33:58 - Interface Local Area Connection 2 metric changed from Automatic to 3, layer IPv4
. 2020.03.29 16:33:58 - Interface Local Area Connection 2 metric changed from Automatic to 3, layer IPv6
. 2020.03.29 16:33:58 - DNS leak protection with packet filtering enabled.
. 2020.03.29 16:33:58 - Routes, added a new route, 68.235.48.108 for gateway 10.27.214.1
. 2020.03.29 16:33:58 - Routes, added a new route, 2607:9000:0:14:fc73:48:1c68:8815 for gateway fde6:7a:7d20:17d6::1
. 2020.03.29 16:33:58 - Flushing DNS
I 2020.03.29 16:33:58 - Checking route IPv4
I 2020.03.29 16:33:58 - Checking route IPv6
I 2020.03.29 16:33:58 - Checking DNS
! 2020.03.29 16:33:59 - Connected.
. 2020.03.29 16:33:59 - OpenVPN > Initialization Sequence Completed
. 2020.03.29 17:03:38 - Collect information about AirVPN completed
. 2020.03.29 17:33:37 - OpenVPN > VERIFY OK: depth=1, C=IT, ST=IT, L=Perugia, O=airvpn.org, CN=airvpn.org CA, emailAddress=info@airvpn.org
. 2020.03.29 17:33:37 - OpenVPN > VERIFY KU OK
. 2020.03.29 17:33:37 - OpenVPN > Validating certificate extended key usage
. 2020.03.29 17:33:37 - OpenVPN > ++ Certificate has EKU (str) TLS Web Server Authentication, expects TLS Web Server Authentication
. 2020.03.29 17:33:37 - OpenVPN > VERIFY EKU OK
. 2020.03.29 17:33:37 - OpenVPN > VERIFY OK: depth=0, C=IT, ST=IT, L=Perugia, O=airvpn.org, CN=Fang, emailAddress=info@airvpn.org
W 2020.03.29 17:33:37 - OpenVPN > WARNING: 'link-mtu' is used inconsistently, local='link-mtu 1550', remote='link-mtu 1602'
W 2020.03.29 17:33:37 - OpenVPN > WARNING: 'auth' is used inconsistently, local='auth [null-digest]', remote='auth SHA512'
. 2020.03.29 17:33:37 - OpenVPN > Outgoing Data Channel: Cipher 'AES-128-GCM' initialized with 128 bit key
. 2020.03.29 17:33:37 - OpenVPN > Incoming Data Channel: Cipher 'AES-128-GCM' initialized with 128 bit key
. 2020.03.29 17:33:37 - OpenVPN > Control Channel: TLSv1.2, cipher TLSv1.2 DHE-RSA-AES256-GCM-SHA384, 4096 bit RSA
. 2020.03.29 17:33:41 - Collect information about AirVPN completed
. 2020.03.29 18:33:37 - Above log line repeated 1 times more
. 2020.03.29 18:33:37 - OpenVPN > TLS: soft reset sec=3600/3600 bytes=15994526475/-1 pkts=20244141/0
. 2020.03.29 18:33:37 - OpenVPN > VERIFY OK: depth=1, C=IT, ST=IT, L=Perugia, O=airvpn.org, CN=airvpn.org CA, emailAddress=info@airvpn.org
. 2020.03.29 18:33:37 - OpenVPN > VERIFY KU OK
. 2020.03.29 18:33:37 - OpenVPN > Validating certificate extended key usage
. 2020.03.29 18:33:37 - OpenVPN > ++ Certificate has EKU (str) TLS Web Server Authentication, expects TLS Web Server Authentication
. 2020.03.29 18:33:37 - OpenVPN > VERIFY EKU OK
. 2020.03.29 18:33:37 - OpenVPN > VERIFY OK: depth=0, C=IT, ST=IT, L=Perugia, O=airvpn.org, CN=Fang, emailAddress=info@airvpn.org
W 2020.03.29 18:33:37 - OpenVPN > WARNING: 'link-mtu' is used inconsistently, local='link-mtu 1550', remote='link-mtu 1602'
W 2020.03.29 18:33:37 - OpenVPN > WARNING: 'auth' is used inconsistently, local='auth [null-digest]', remote='auth SHA512'
. 2020.03.29 18:33:37 - OpenVPN > Outgoing Data Channel: Cipher 'AES-128-GCM' initialized with 128 bit key
. 2020.03.29 18:33:37 - OpenVPN > Incoming Data Channel: Cipher 'AES-128-GCM' initialized with 128 bit key
. 2020.03.29 18:33:37 - OpenVPN > Control Channel: TLSv1.2, cipher TLSv1.2 DHE-RSA-AES256-GCM-SHA384, 4096 bit RSA
. 2020.03.29 18:33:49 - Collect information about AirVPN completed

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If wintun doesn't give you significantly more speed than the old TAP then you have something else limiting your speed.  That's my thought.  It could be some hardware or software on your PC or in your network somewhere.  Or it could be something with your ISP.

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2 hours ago, go558a83nk said:

If wintun doesn't give you significantly more speed than the old TAP then you have something else limiting your speed.  That's my thought.  It could be some hardware or software on your PC or in your network somewhere.  Or it could be something with your ISP.


Thanks for responding.  If the only thing I am changing is enabling the VPN and getting a reduction of 95% on my speed, it seems like the issue is somewhere in the configuration of the VPN.  I get good speeds on my VPN for my company, much better than the speeds I am getting with AirVPN.  That is running through Cisco AnyConnect, but I don't know anything else about the connection.  I don't think it's hardware on my computer, as I get great speeds as soon as I turn the VPN off.  I run a pretty barebones system, without very many processes running at the same time, so I don't think there is any software limiting it either.

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