increase datagram session switching interval

Datagram.h

@@ -24,7 +24,7 @@ namespace datagram
 	// milliseconds for how long we try sticking to a dead routing path before trying to switch
 	const uint64_t DATAGRAM_SESSION_PATH_TIMEOUT = 5000;
 	// milliseconds interval a routing path is used before switching
-	const uint64_t DATAGRAM_SESSION_PATH_SWITCH_INTERVAL = 60 * 1000;
+	const uint64_t DATAGRAM_SESSION_PATH_SWITCH_INTERVAL = 5 * 60 * 1000;
 	// milliseconds before lease expire should we try switching leases
 	const uint64_t DATAGRAM_SESSION_LEASE_HANDOVER_WINDOW = 10 * 1000;
 	// milliseconds fudge factor for leases handover