Does a VPN Slow Down Internet Speed? Causes and Fixes

Yes, in almost every case a VPN makes your internet at least a little slower. Your data is encrypted on your phone, travels to the VPN server, and only then goes on to the website, so there is extra work and an extra stop on the way. When the server is close and not overloaded, the difference is often too small to notice. When it is far away or crowded, you will feel it. The good news is that most of the slowdown comes from things you can change.

Why a VPN makes my internet slow

Five things decide how much a VPN reduces your internet speed, roughly in order of how often they matter:

• Distance to the server. This is the big one. If you are in Bangkok and connect to a server in Los Angeles, every request crosses the Pacific and back. Downloads may still be quick once they get going, but there is a delay before every page loads, every message sends and every video starts.
• How busy the server is. A VPN server shares its bandwidth among everyone connected to it. A crowded server feels slow even when it is nearby.
• The route between you and the server. Your traffic goes over your internet provider’s links to the server’s network. Some of those links are congested at peak hours, and on a busy evening there is little anyone can do about it.
• Encryption on your phone. Encrypting and decrypting every packet takes a little processing power. On a modern phone this is rarely the bottleneck, but on an older device you may notice it.
• Packet loss on your network. On a weak Wi-Fi signal or a busy mobile network, packets get lost and have to be sent again. A VPN can make that loss more noticeable, because the tunnel has to recover from it as well.

So when people ask why their VPN is so slow, the honest answer is usually distance or crowding, not the encryption itself.

VPN buffering problems

Video is where a slow VPN shows first. A stream needs steady speed for minutes at a time, so a distant or crowded server that is fine for browsing can make it pause to buffer. Delay also hurts: every new chunk of video has to be requested across the same long route. Picking a closer server and the “4K Streaming” mode helps; on the free plan, Slow Mode at about 2 Mbps per connection is not enough for smooth video, so buffering after heavy use usually means the day’s high-speed data is gone.

Why VPN quality is bad on some services

When a VPN feels unusable rather than just a bit slower, it is usually one of these:

• the service has only a few servers and too many users on each;
• the nearest server is still on another continent;
• your network handles the VPN’s protocol badly, so connections stall or drop;
• you are on a free plan that deliberately slows you down after a set amount of data.

The last point applies to us too, so here are the real numbers.

How fast is 9F VPN, honestly?

We don’t publish speed figures, because the result depends on your network, the time of day and the server you choose. What we can tell you is how the plans work, since that affects speed directly.

Free plan. You get 2 GB of high-speed data per day on servers in Germany and the United States (Nuremberg and Los Angeles). After that, the connection does not cut off: it switches to Slow Mode at about 2 Mbps per connection until the daily reset at 00:00 UTC+6:30. Slow Mode is fine for chat and email but not really enough for video. If you are in Asia, the free servers are also a long way from you, so expect slower page loads than on a nearby server.

VIP. VIP has no daily data cap and gives you more locations to choose from: Singapore, Hong Kong, Tokyo, Bangkok, and Silicon Valley, several of them in Asia. VIP servers also support Hysteria2, one of the two protocols the app uses (VLESS + REALITY and Hysteria2). Hysteria2 runs over QUIC and is designed to hold up on links that drop packets, which can make a difference on unstable mobile networks. On the US App Store, VIP costs 2.99 USD a month or 19.99 USD a year; prices in other countries may differ.

If a free server is quick in the morning and crawls in the afternoon, check whether you have used up the day’s high-speed data before you assume something is broken.

Can a VPN improve internet speed?

Usually not, so be wary of any VPN that promises to make your internet faster. A VPN sits on top of your existing connection, so it cannot go faster than that connection.

There are two narrow cases where a VPN can help:

1. Your provider slows down one kind of traffic. Some networks limit video or large downloads on purpose. Because a VPN hides what kind of traffic you are sending, that kind of targeted slowdown may no longer apply. It does not lift a general speed cap on your plan.
2. Your provider routes some sites badly. Occasionally the path through a VPN server reaches a site more directly than your provider’s default route.

Neither is something we can promise for your network. Test it: if the VPN is faster for you on a particular site, that is a bonus, not the rule.

Can a VPN interfere with Wi-Fi or make it faster?

It does neither. Your phone still joins the network and holds the signal exactly as before; the VPN only changes where your traffic goes once it is online. If the tunnel stalls, it can look as if the Wi-Fi has stopped working even though the signal bars are full. Disconnect the VPN to tell the two apart.

There is also no such thing as a VPN for Wi-Fi speed, because Wi-Fi speed depends on the radio link between your phone and the router. Distance from the router, walls, interference from your neighbors’ networks and the number of devices sharing it all come into play before the VPN is involved.

What a VPN does do on Wi-Fi is encrypt your traffic, so whoever runs a café or hotel network cannot see what you are doing. That is a privacy benefit, not a speed one.

Can a VPN affect your internet connection in other ways?

Yes, in a few ways, and none of them is permanent:

• Some sites add extra checks. Websites see the VPN server’s address instead of yours, and some respond with a CAPTCHA or an extra sign-in check.
• Local content changes. Search results and maps may reflect the server’s location rather than yours.
• Nothing loads if the tunnel drops. If the VPN stops responding but your phone still routes traffic through it, the internet seems to stop working. On Android, the system setting that blocks connections without a VPN makes this more likely. Disconnecting the VPN fixes it.

A VPN cannot ruin your Wi-Fi or your phone. Turning it off, or removing its profile in your phone’s settings, puts everything back as it was.

How to fix a slow VPN connection

Work through these in order and test after each one:

1. Get a baseline. Run a speed test with the VPN off and then with it on, using the same network. If the connection is slow without the VPN too, the problem is your network, not the VPN.
2. Pick a closer location. In the “Servers” tab, choose the location nearest to you. Free users can only choose between Germany and the United States, so try both and stick with whichever is faster.
3. Let the app choose. Switch to “Auto-Select Optimal Server”. The app can also move you to a backup route on its own when the current one stops working.
4. Change the mode. The app has four modes: Smart Turbo, 4K Streaming, Low Latency, and Privacy Shield. Try “Low Latency” for games or “4K Streaming” for video instead of the one you are on, and compare.
5. Check your daily data. On the free plan, if things slow down after heavy use, it is usually Slow Mode. It lifts at the daily reset at 00:00 UTC+6:30.
6. Fix the local link. Move closer to the router, switch between Wi-Fi and mobile data, and pause backups or large downloads on the same network.
7. Reconnect. On the “Home” tab, disconnect, wait until the status shows “Not Connected”, then connect again. A fresh connection sometimes lands on a better path.

Limits worth knowing

• 9F VPN runs on iOS and Android only. There is no app for computers, so this guide applies to phones and tablets.
• Free servers are only in Germany and the United States, and VIP servers are in Singapore, Hong Kong, Japan, Thailand, and the United States. If you need a server in any other country, we don’t have one.
• No VPN can give you more speed than your internet plan or your Wi-Fi signal allows.

If a server is still much slower than your baseline after all of this, email support@9fvpn.com with your phone model, the location you chose and when it happened. Please don’t send passwords or screenshots of payment details.