We tested against version 19.00 and a popular free VPN (ProtonVPN Free) over a 100 Mbps connection.
Ultrasurf 19.02 is interesting not because it is the fastest or most secure, but because it represents a . Its engineering choices (RAM-only execution, "Whale" protocol, weekend timing) are direct responses to specific censorship appliances (e.g., Great Firewall, Eagle Network). ultrasurf 19.02