Both are true, depending entirely on the situation. A VPN adds a processing and routing step to every packet your device sends, which usually adds some latency, but in a specific and fairly common scenario, it can actually reduce it. Here’s how to tell which one applies to you.
Why a VPN usually adds latency
Normally, your gaming traffic takes the most direct route your internet provider can manage to the game server. Adding a VPN inserts an extra stop, the VPN server, into that path, and encrypting/decrypting every packet takes a small amount of processing time. Both of these typically add a few milliseconds to tens of milliseconds of latency, depending on how far out of the way the VPN server is and how well-provisioned it is.
The specific case where a VPN can reduce lag
Some internet service providers actively throttle or deprioritize gaming traffic during peak hours, sometimes deliberately, sometimes as a side effect of generic traffic-shaping policies that target high-bandwidth or real-time protocols. Because a VPN encrypts your traffic, your ISP can no longer identify it as gaming traffic to throttle, since it just looks like generic encrypted data. If your ISP is doing this, a VPN can measurably reduce lag by avoiding the throttling entirely, even though it adds its own small overhead.
There’s a second, narrower case: occasionally a VPN provider’s routing to a specific game server is genuinely more efficient than your ISP’s default path, due to peering arrangements or network congestion on your ISP’s usual route. This is less common and harder to predict, but it does happen.
How to tell which situation you’re in
- Check your in-game ping with the VPN off, note the number
- Connect to a VPN server as close to you (or to the game server) as possible, and check ping again
- If ping goes up noticeably, you’re in the normal case, the VPN’s overhead outweighs anything else
- If ping goes down or stays roughly the same, your ISP was likely throttling or taking an inefficient route, and the VPN is helping
What actually matters for VPN gaming performance
- Server distance — the closer the VPN server is to you or the game server, the less overhead it adds
- Server load — an overloaded server adds latency regardless of distance
- Protocol — newer, lighter protocols like WireGuard generally add less overhead than older ones
Bottom line
A VPN isn’t a guaranteed lag reducer, but it isn’t a guaranteed lag increaser either, it depends on whether your ISP is the actual bottleneck. The only reliable way to know is to test your own connection both ways rather than assuming either outcome.