Blog

VPN speed, protocols and privacy, explained.

Plain answers from the team that runs SleekDart's servers. Every number is measured on our own network or cited to a primary source.

Speed

What makes a VPN fast, why it gets slow, and how to measure it.

  • FAR SERVER · LONG TRIPNEAR SERVER · SHORT TRIPYOUWEBSITESLEEKDART / TROUBLESHOOTING
    Speed8 min read

    Why Is My VPN So Slow? 9 Causes and How to Fix Each One

    A slow VPN is usually one of nine things: distance, a busy server, an old protocol, blocked UDP, Wi-Fi, MTU and more. How to find yours in minutes, and fix it.

  • FAR SERVER · FEW ROUND TRIPS PER SECONDNEAR SERVER · MANY ROUND TRIPS PER SECONDONE SECOND →SLEEKDART / LATENCY
    Speed7 min read

    Low-Latency VPN: How to Keep Video Calls and Games Smooth

    A VPN adds latency in three places: distance, handshakes and the protocol. How much ping a VPN adds, what Zoom and Teams need, and how to keep it low.

Protocols

VLESS + REALITY, stealth and post-quantum encryption, explained plainly.

  • TCP 443YOUR SERVERYOUR APP · KEY OKOPEN INTERNETA PROBE · NO KEYTHE REAL WEBSITESLEEKDART / REALITY
    Protocols8 min read

    What Is VLESS + REALITY? The Protocol, Explained Simply

    VLESS + REALITY is an Xray-core protocol that looks like a visit to a real website, so it's fast and hard to block. How it works, and how to use it.

  • EVERYTHING ON THIS NETWORK · TLS 1.3 ON TCP 443YOU · SAME SHAPE, SAME SIZE, SAME PORTSLEEKDART / STEALTH
    Protocols7 min read

    Stealth VPN: How VPN Obfuscation Works and When You Need It

    A stealth VPN disguises VPN traffic as ordinary HTTPS so restrictive networks can't spot and block it. Obfuscation methods compared, and when you need one.

  • FIND THE NEAREST POINTML-KEM-768 + X25519 · HYBRID KEY EXCHANGESLEEKDART / POST-QUANTUM
    Protocols6 min read

    Post-Quantum VPN: What It Is, Who Has It, and Do You Need One?

    A post-quantum VPN uses ML-KEM so traffic recorded today can't be decrypted by future quantum computers. How it works, who has it, and who needs it.

Guides

Setups and fixes for the networks you actually work on.