Domain-based routing rules (e.g., "domain:google.com" → "proxy" ) require resolution before decision. If DNS times out, V2Ray may fall back to a default route or drop the connection.
A slow DNS server can completely undermine the speed of your V2Ray proxy, causing page load times that feel like a dial-up connection. By understanding that DNS resolution is a critical path item—and by configuring V2Ray to use fast, local, or direct resolution—you can often double or triple your perceived browsing speed without touching your remote server. Always remember: v2ray slow dns server
If DNS_RTT = 500ms (common for overloaded or remote servers), every new domain connection suffers a minimum 0.5s penalty, regardless of proxy speed. Domain-based routing rules (e
If you must use public DNS, test alternatives that are less likely to be throttled: By understanding that DNS resolution is a critical
Use tools like dig , nslookup , or online tools to test the speed and reliability of your DNS servers. This can help you choose the best DNS server for your needs.