Internet & Connectivity · common
为什么我的 VPN 在中国突然变慢或断线？
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⚠️ SYMPTOM
你的 VPN 前 3 天还能正常使用，但现在每 10 分钟就会断线一次，或者网页加载速度像拨号上网一样慢。
🔍 MOST LIKELY CAUSE
中国 ISP 会在高峰时段检测并限速 VPN 协议（尤其是 OpenVPN 和 WireGuard）。Astrill 的 StealthVPN 和 LetsVPN 的专有协议存活时间最长。
✓ HOW TO FIX
切换到不同的服务器/节点（从中国连接通常 Hong Kong、日本、美国西海岸速度最快）。在 VPN 应用中将协议改为 "Stealth" 或 "Obfuscated"（混淆）模式。如果你的 VPN 连续 24 小时以上无法使用，请启用备用方案——大多数旅行者都会准备 2 份付费 VPN 订阅。
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