Switching networks means reconnecting the VPN, and those few seconds of waiting are annoying. ProtonVPN's new WireGuard update compresses reconnect time to nearly imperceptible and lifts throughput as well.
WireGuard entered the Linux kernel in 2019 and quickly became the modern VPN protocol of choice — compact code, easy audits and strong performance. ProtonVPN's update builds on that foundation.
1. What changed
The new implementation optimizes three areas: handshake latency, reconnect speed during mobile network switches, and throughput ceilings on high-bandwidth links. Lower handshake overhead means faster connection establishment, most visible on mobile.
2. Measured speed gains
Official tests show the new WireGuard implementation cut handshake time by about 40% on average, reduced mobile reconnect from seconds to sub-second, and lifted throughput by roughly 30% on high-bandwidth lines.
| Metric | Old | New |
|---|---|---|
| Handshake time | Baseline | ~40% shorter |
| Mobile reconnect | Seconds | Sub-second |
| High-bandwidth throughput | Baseline | ~30% higher |
A commuter switching between WiFi and cellular reported that the VPN used to drop briefly, but now it is barely noticeable and video calls stay connected.
3. How to try it
The updated client defaults to WireGuard, so existing users just upgrade. New users get the latest build from a free vpn download on ProtonVPN and enjoy the new speed immediately.
Back to the switching annoyance: the new protocol makes reconnects near-instant. The protocol hides in the background, yet it is the unsung hero of every connection. Open ProtonVPN, update, and feel the boost.
