The short answer: yes, sometimes — but not always.
The long answer: it depends on factors like encryption, distance to the VPN server, and the protocol being used.

In this article, we’ll explain why VPNs can affect speed, show you where slowdowns come from, and reveal how to minimise the impact.

1. Why VPNs Affect Internet Speed

A VPN adds extra steps to your connection:

Your data is encrypted on your device.
It travels through a secure tunnel to the VPN server.
The server forwards it to the internet.

Each step introduces potential delays. But the size of the slowdown depends on the tech behind the VPN.

2. Factors That Impact VPN Speed

? Encryption Overhead

Stronger encryption (AES-256, ChaCha20) takes processing power.
This adds milliseconds of delay.

? Server Distance

The further away the server, the longer the round trip.
UK → Australia will always be slower than UK → France.

? Protocol Choice

WireGuard → extremely fast, low overhead.
OpenVPN (UDP) → solid balance of speed + security.
OpenVPN (TCP) → slower, but more reliable.
L2TP/IPsec → slower, outdated.

? Server Load

Free or overcrowded VPNs often cram too many users on one server.
Result: slower speeds and dropped connections.

? ISP & Network Throttling

Some ISPs throttle video streaming or torrents.
A VPN can actually bypass throttling → making speeds faster.

3. Real-World Speed Impact

Typical speed changes when using a reputable paid VPN:

Local Server (UK → UK) → 5–10% slower.
Nearby Server (UK → Germany) → 10–20% slower.
Far Server (UK → US) → 20–40% slower.
Very Far Server (UK → Asia/Australia) → 50%+ slower.

With WireGuard, the slowdown is often much less — as little as 2–5% locally.

4. When a VPN Can Make Speeds Faster

It sounds strange, but a VPN can sometimes improve performance:

Bypassing ISP throttling → streaming Netflix, YouTube, or torrents.
Reducing routing inefficiencies → sometimes VPN servers find a shorter path to a website.

5. How to Minimise VPN Slowdowns

If you want the benefits of a VPN without painful lag:

✅ Use WireGuard protocol where possible.
✅ Connect to a server close to your actual location.
✅ Choose a premium provider (not a free VPN with crowded servers).
✅ Switch servers if you notice congestion.
✅ Use a wired connection instead of WiFi for stability.

6. Gaming, Streaming, and VPN Speed

Gaming: Ping (latency) matters more than raw speed. A local VPN server usually keeps gaming smooth.
Streaming: VPNs can unblock foreign Netflix/Disney libraries, but you need a fast server for HD or 4K.
Downloading: Torrents work well on VPNs, but slow providers kill performance. Look for “P2P optimised” servers.

7. The Bottom Line

Yes, VPNs can slow down your internet — but with the right provider and protocol, the difference is often barely noticeable.

Cheap/free VPNs = big slowdowns.
Premium VPNs (especially with WireGuard) = minimal slowdown.
In some cases, you may even see faster speeds if your ISP was throttling traffic.

Does a VPN Slow Down Your Internet – Conclusion

A VPN doesn’t have to mean a slow internet connection. With modern protocols like WireGuard and strong server infrastructure, the impact is often so small you won’t notice it.

So next time you hear “VPNs kill your speed,” remember:

A bad VPN slows you down.
A good VPN keeps you private and fast.

? Learn more:

Why Free VPNs Are Risky: Data Logging Explained

How VPNs Work: The Complete Technical Guide

WireGuard vs OpenVPN: Which Protocol Should You Use?

Does a VPN Slow Down Your Internet

Split Tunnelling: Using VPN Without the Speed Hit

If you’re frustrated by slowdowns, split tunnelling might solve your problem. Not all your traffic needs to go through the VPN — only the bits that matter for privacy or unblocking.

Split tunnelling lets you route some apps or websites through the VPN whilst everything else uses your normal connection. This means:

Your streaming service connects directly (no slowdown).
Your banking app uses the VPN for security (encrypted).
Your torrents go through the VPN (anonymous).

The result? You get speed on non-sensitive traffic and privacy where you need it.

How to Set It Up

Most modern VPN apps (ExpressVPN, NordVPN, Surfshark) include split tunnelling options:

App-level: Exclude certain apps from the VPN tunnel — they’ll use your normal connection.
Website-level: Route specific domains through your ISP, not the VPN server.

On Windows and Mac, go into your VPN app settings, find “Split Tunnelling” or “App Exclusions”, and tick the apps you want to exclude. On mobile (iPhone and Android), support varies — check your VPN provider’s settings first.

Real-World Example

You’re in the UK using a VPN server in the US. Normally, a Netflix stream would travel: Your device → US VPN server → Netflix. Result: buffering, lag, possible geo-blocking errors.

With split tunnelling, Netflix stays local: Your device → Netflix directly (UK speed). Meanwhile, your email syncs through the US server (privacy maintained). You get the best of both worlds.

A Word of Caution

Split tunnelling does weaken your privacy slightly — traffic not routed through the VPN is visible to your ISP. If you’re torrenting illegally or need maximum anonymity, keep everything through the VPN. For everyday use (work, banking, streaming), split tunnelling is a practical compromise between speed and security.

Stuart Stafford

S Stafford is a UK-based IT consultant and technology writer with over 30 years of hands-on experience in the industry, dating back to 1993. He specialises in cybersecurity, networking, server infrastructure, and AI tools for small and medium businesses, and writes practical guides aimed at helping UK business owners understand and implement technology confidently.