Slow speeds using AirVPN

[DarkShado 0]

Ok I am about ready to cancel my service with AirVPN. 
I am sick of this I am getting extremely slow speeds here
and just horrible latency when I use AirVPN. 

is AirVPN not updating their servers and overloading their 
server or something because I have seen a serious decline in service over
the years. I have been with AirVPN for years now.

Also I am a trained network admin here as well.  I am not your
typical end user.  I have also tried AirVPN on multiple devices including
phone, tablet, computer and a Buzz TV X5 box all with the same 
results.

I am on a Gigabit connection there is no connection issues here at all
I am getting great speeds off the VPN. 

https://www.speedtest.net/my-result/d/1744020f-d14f-4384-94f2-c40720c89bf3

I mean there are my results coming from my main PC with no VPN
949.17 Mbps down and Upload 162.53 Mbps upload about 9:30 AM MST (GMT-0700) 
on Nov 27 2025.

Also tried adjusting the MTU size as well

Right now the MTU size is 1320

main computer is running Windows 11 Pro. 

Also when I connect from my main computer (the windows 11 computer) this is showing up in
the logs as well in Eddie when I use WireGuard. 

! 2025.11.27 09:29:47 - Connecting to Superba (United States of America, Chicago, Illinois)
. 2025.11.27 09:43:24 - WireGuard > Packet has invalid nonce 379829 (max 387992)
. 2025.11.27 09:43:24 - WireGuard > Packet has invalid nonce 379830 (max 388115)
. 2025.11.27 09:43:24 - WireGuard > Packet has invalid nonce 379832 (max 388263)
. 2025.11.27 09:43:24 - WireGuard > Packet has invalid nonce 379833 (max 388405)
. 2025.11.27 09:43:24 - WireGuard > Packet has invalid nonce 379834 (max 388406)
. 2025.11.27 09:43:24 - WireGuard > Packet has invalid nonce 379838 (max 388488)
. 2025.11.27 09:43:24 - WireGuard > Packet has invalid nonce 379839 (max 388591)
. 2025.11.27 09:43:24 - WireGuard > Packet has invalid nonce 379854 (max 388683)
. 2025.11.27 09:43:24 - WireGuard > Packet has invalid nonce 379855 (max 388785)
. 2025.11.27 09:43:24 - WireGuard > Packet has invalid nonce 379856 (max 388912)
. 2025.11.27 09:43:24 - WireGuard > Packet has invalid nonce 379864 (max 389021)

So what the heck is that about I googled it and it says that it is a corrupted UDP
packet and because UDP has no error checking. 

I was connected to Superba (United States of America, Chicago, Illinois)
 

But the bigger question is why am I getting this in the first place because I shouldn't
be. There are no issues here on my end. 

Also when I connected from my main computer running windows 11 I am getting 
Normally connected to you on most servers I get about 65 Mbps to about 150 Mbps 
at most on your servers. again I have tried this across multiple devices downloading
torrents is just miserable and slow at points.

Are your servers over saturated with users? Maybe time to upgrade your servers
and get more servers. And for the love of god can you please get servers in 
more locations please some more on the west coast of Canada would be nice 
too.  Ya I know you have some on B.C. here but I mean some in Alberta or Saskatchewan 
would be nice too.  I mean something else on the west coast of Canada you have a 
lot of servers on the Eastern Part of Canada in Toronto but that is a long ways from me. 
Your west coast US servers are ussally very busy most of the time too. 

What is going on with your slow speeds and your servers.. I have been a long time
customer now and not too happy about it.  The latency is just horrible too if you try
and watch anything on IPTV when connected to your servers as well. 

And I connect to your VPN on the same computer as I did the speed test 
above I get 300.90 Mbps down and 
I mean I try as well from my Buzz TV X5 and connect to your VPN as well
and the latency is just horrible and it pauses and stops all the time but it isn't
the service because it works fine if I am disconnected from your VPN. 

The Buzz TV X5 box is running Android 11 so just think of it as a modified version
of a phone. 

All signs point to the VPN I mean I have been a customer of yours now for
several years AirVPN. 

This isn't a technical issue on my end at all my end here without your VPN works perfectly.
I connect to your VPN and it goes all to hell and yes I have tried both Wireguard and Open
VPN on different ports and different settings too..  

Jamie (she / her)  Edited ... by DarkShado

[Staff 10369]

16 hours ago, DarkShado said:

is AirVPN not updating their servers and overloading their server or something

Hello!

Thank you for your choice in the past years. The servers are continuously updated and added and the average performance in the last year has either remained the same or improved, notably in the USA and Europe. Currently there's more available bandwidth per user than there was one year ago.

In the last 13 months AirVPN added about 230,000 Mbit/s on its infrastructure and also renewed hardware. We're talking about bare metal servers with dedicated ports and full duplex lines, no tricks with multiple addresses, shared lines or virtual machines. The outcome is remarkably good: if you compare the top hundred user speed of now with the table of one year ago, you will see an improvement of the average speed, in spite of the dramatic user base increase. https://airvpn.org/topusers/ 

It is even more important to note that the average speed of users after the 50th place (51-100) has increased of more than 20% if you compare it with a table of October 2024, This is due to the increase of the available bandwidth, software optimization, and hardware replacements behind the scenes.

Therefore, we would focus especially on possible bottlenecks on your side, because while the infrastructure is providing better and better performance, you experience exactly the opposite. The paramount cause of the slow performance is this:
 

16 hours ago, DarkShado said:

. 2025.11.27 09:43:24 - WireGuard > Packet has invalid nonce 379829 (max 387992)

Each time you get this error, the packet must be re-transmitted in its entirety. This is the apparent cause, but it must in turn be caused by something underlying, so this conclusion:
 

Quote

This isn't a technical issue on my end at all my end here without your VPN works perfectly.

is dubious, and probably wrong.
 

16 hours ago, DarkShado said:

The latency is just horrible too

It may very well be the consequence of the same aforementioned cause. Everything is wrapped in the UDP tunnel, including ICMP with WireGuard, so the continuous need to re-transmit packets severely affects the round trip time too.
 

Quote

And I connect to your VPN on the same computer as I did the speed test  above [with VPN 60-150 Mbit/s] I get 300.90 Mbps down and

This hints at a problem affecting your end (either your local network, or some section of your ISP network). It is indeed strange that your 1 Gbit/s line provides only 300 Mbit/s on average without VPN. This is another clue suggesting that a problem unrelated to AirVPN is ongoing.
 
 

Quote

Right now the MTU size is 1320

Please repeat the tests with 1280 bytes MTU and check whether the "invalid nonce" packet error quantity disappears, decreases or remains the same. If it remains the same the problem must be investigated carefully as different anomalies can cause it: dirty line, Ethernet cable problems, WiFi interference, router firmware are the most important examples. If you're interested to go deeper in this issue and you are ready to take into consideration the idea that the problem could be on your side, the support team is available 24/7 to support you and provide you with suggestions which could resolve the issue. Or you can continue here too concurrently, so you can get community's help as well

Please include more relevant information such as your Operating Systems names and versions (on top of the Windows 11 machine you already mentioned) and the software you run to connect to AirVPN servers on each system.

Kind regards