diff --git a/conf/application.conf b/conf/application.conf
index 59e5b467..a4c6a6f0 100644
--- a/conf/application.conf
+++ b/conf/application.conf
@@ -150,7 +150,7 @@ akka {
 			parallelism-factor = 3.0
 
 			# Max number of threads to cap factor-based parallelism number to
-			parallelism-max = 256
+			parallelism-max = 1024
 
 			# Setting to "FIFO" to use queue like peeking mode which "poll" or "LIFO" to use stack
 			# like peeking mode which "pop".
diff --git a/modules/viz/app/tuktu/viz/actor/Charting.scala b/modules/viz/app/tuktu/viz/actor/Charting.scala
index b9b12258..c945d1ba 100644
--- a/modules/viz/app/tuktu/viz/actor/Charting.scala
+++ b/modules/viz/app/tuktu/viz/actor/Charting.scala
@@ -15,6 +15,7 @@ import play.api.Play.current
 import akka.actor.PoisonPill
 import scala.concurrent.duration.DurationInt
 import scala.concurrent.ExecutionContext.Implicits.global
+import play.api.libs.json.JsValue
 
 case class GetEnumerator()
 case class EnumeratorReply(
@@ -57,7 +58,7 @@ class ChartingActor(name: String, parent: ActorRef, expiration: Long, isHistoric
             sender ! new EnumeratorReply(enumerator, history.toList)
         case sh: SetHistorical =>
             historical = sh.historical
-        case packet: JsObject => {
+        case packet: JsValue => {
             lastPacket = System.currentTimeMillis
             try {
                 // Add to history, then push