diff --git a/SignalServiceKit/src/Messages/OWSBatchMessageProcessor.m b/SignalServiceKit/src/Messages/OWSBatchMessageProcessor.m
index 5fe505c7b..5d4f4673e 100644
--- a/SignalServiceKit/src/Messages/OWSBatchMessageProcessor.m
+++ b/SignalServiceKit/src/Messages/OWSBatchMessageProcessor.m
@@ -317,6 +317,9 @@ NSString *const OWSMessageContentJobFinderExtensionGroup = @"OWSMessageContentJo
 {
     AssertOnDispatchQueue(self.serialQueue);
 
+    // We want a value that is just high enough to yield perf benefits.
+    const NSUInteger kIncomingMessageBatchSize = 32;
+
     NSArray<OWSMessageContentJob *> *jobs = [self.finder nextJobsForBatchSize:kIncomingMessageBatchSize];
     OWSAssert(jobs);
     if (jobs.count < 1) {
@@ -338,7 +341,7 @@ NSString *const OWSMessageContentJobFinderExtensionGroup = @"OWSMessageContentJo
     // This delay won't affect the first message to arrive when this queue is idle,
     // so by definition we're receiving more than one message and can benefit from
     // batching.
-    dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(0.1f * NSEC_PER_SEC)), self.serialQueue, ^{
+    dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(0.5f * NSEC_PER_SEC)), self.serialQueue, ^{
         [self drainQueueWorkStep];
     });
 }
diff --git a/SignalServiceKit/src/Messages/OWSMessageHandler.h b/SignalServiceKit/src/Messages/OWSMessageHandler.h
index 28534c0e3..cb8967b5b 100644
--- a/SignalServiceKit/src/Messages/OWSMessageHandler.h
+++ b/SignalServiceKit/src/Messages/OWSMessageHandler.h
@@ -4,8 +4,6 @@
 
 NS_ASSUME_NONNULL_BEGIN
 
-extern const NSUInteger kIncomingMessageBatchSize;
-
 @class OWSSignalServiceProtosContent;
 @class OWSSignalServiceProtosDataMessage;
 @class OWSSignalServiceProtosEnvelope;
diff --git a/SignalServiceKit/src/Messages/OWSMessageHandler.m b/SignalServiceKit/src/Messages/OWSMessageHandler.m
index 59450d7ca..b2915930b 100644
--- a/SignalServiceKit/src/Messages/OWSMessageHandler.m
+++ b/SignalServiceKit/src/Messages/OWSMessageHandler.m
@@ -7,15 +7,6 @@
 
 NS_ASSUME_NONNULL_BEGIN
 
-// We need to use a consistent batch size throughout
-// the incoming message pipeline (i.e. in the
-// "decrypt" and "process" steps), or the pipeline
-// doesn't flow smoothly.
-//
-// We want a value that is just high enough to yield
-// perf benefits.  The right value is probably 5-15.
-const NSUInteger kIncomingMessageBatchSize = 10;
-
 // used in log formatting
 NSString *envelopeAddress(OWSSignalServiceProtosEnvelope *envelope)
 {