Increase the number of parallel registrations

interfaces/params/network.go

@@ -49,7 +49,7 @@ func GetDefaultNetwork() Network {
 		RegNodesBufferLen:         500,
 		NetworkHealthTimeout:      30 * time.Second,
 		E2EParams:                 GetDefaultE2ESessionParams(),
-		ParallelNodeRegistrations: 8,
+		ParallelNodeRegistrations: 20,
 		KnownRoundsThreshold:      1500, //5 rounds/sec * 60 sec/min * 5 min
 		FastPolling:               true,
 		BlacklistedNodes:          make([]string, 0),