The congestion-control algorithms FastAPN uses on high-RTT links

Standard TCP congestion control was designed for terrestrial networks and behaves badly over satellite and other high-latency paths, where it mistakes long delays for packet loss and throttles back. FastAPN sidesteps this by automatically deploying congestion-control variants chosen to suit the link.

• TCP Hybla and Hybla-i — designed specifically for satellite and high-RTT connections, and able to cope with the higher error rates those links suffer.
• Westwood, Tahoe, Reno and OILA — selected automatically according to how the network is performing at the time.
• MPTCP (Multipath TCP) — lets a session use several IP addresses or interfaces at once, pooling their capacity for better throughput and resilience.

Because the selection is automatic and happens on FastAPN's side of the split connection, you get the benefit without configuring anything. The algorithm in use can change dynamically as conditions on the link change.