diff --git a/cluster-endpoints/src/grpc_multiplex.rs b/cluster-endpoints/src/grpc_multiplex.rs
index 0e200aa1..450eb44b 100644
--- a/cluster-endpoints/src/grpc_multiplex.rs
+++ b/cluster-endpoints/src/grpc_multiplex.rs
@@ -10,6 +10,7 @@ use geyser_grpc_connector::grpcmultiplex_fastestwins::{
     create_multiplexed_stream, FromYellowstoneExtractor,
 };
 
+use itertools::Itertools;
 use log::{debug, info, trace, warn};
 use solana_lite_rpc_core::structures::produced_block::ProducedBlock;
 use solana_lite_rpc_core::structures::slot_notification::SlotNotification;
@@ -17,9 +18,8 @@ use solana_lite_rpc_core::AnyhowJoinHandle;
 use solana_sdk::clock::Slot;
 use solana_sdk::commitment_config::CommitmentConfig;
 use std::collections::{BTreeSet, HashMap, HashSet};
-use std::time::Duration;
+use std::time::{Duration, Instant};
 use tokio::sync::broadcast::Receiver;
-use tokio::sync::mpsc::UnboundedSender;
 use yellowstone_grpc_proto::geyser::subscribe_update::UpdateOneof;
 use yellowstone_grpc_proto::geyser::SubscribeUpdate;
 
@@ -54,7 +54,7 @@ impl FromYellowstoneExtractor for BlockMetaHashExtractor {
 
 fn create_grpc_multiplex_processed_block_stream(
     grpc_sources: &Vec<GrpcSourceConfig>,
-    processed_block_sender: UnboundedSender<ProducedBlock>,
+    processed_block_sender: async_channel::Sender<ProducedBlock>,
 ) -> Vec<AnyhowJoinHandle> {
     let commitment_config = CommitmentConfig::processed();
 
@@ -71,10 +71,15 @@ fn create_grpc_multiplex_processed_block_stream(
         streams.push(block_reciever)
     }
     let merging_streams: AnyhowJoinHandle = tokio::task::spawn(async move {
+        const MAX_SIZE: usize = 1024;
         let mut slots_processed = BTreeSet::<u64>::new();
+        let mut last_metrics = Instant::now();
         loop {
             let block_message = futures::stream::select_all(streams.clone()).next().await;
-            const MAX_SIZE: usize = 1024;
+            if last_metrics.elapsed() > Duration::from_secs(10) {
+                last_metrics = Instant::now();
+                info!("merging block streams: queue length {:?}", streams.iter().map(|s| s.len()).collect_vec());
+            }
             if let Some(block) = block_message {
                 let slot = block.slot;
                 // check if the slot is in the map, if not check if the container is half full and the slot in question is older than the lowest value
@@ -85,6 +90,7 @@ fn create_grpc_multiplex_processed_block_stream(
                 {
                     processed_block_sender
                         .send(from_grpc_block_update(block, commitment_config))
+                        .await
                         .context("Issue to send confirmed block")?;
                     slots_processed.insert(slot);
                     if slots_processed.len() > MAX_SIZE {
@@ -133,8 +139,8 @@ pub fn create_grpc_multiplex_blocks_subscription(
     let jh_block_emitter_task = {
         tokio::task::spawn(async move {
             loop {
-                let (processed_block_sender, mut processed_block_reciever) =
-                    tokio::sync::mpsc::unbounded_channel::<ProducedBlock>();
+                let (processed_block_sender, processed_block_reciever) =
+                    async_channel::unbounded::<ProducedBlock>();
 
                 let processed_blocks_tasks = create_grpc_multiplex_processed_block_stream(
                     &grpc_sources,
@@ -232,6 +238,9 @@ pub fn create_grpc_multiplex_blocks_subscription(
                                 log::error!("block or block meta stream stopped restaring blocks");
                                 break;
                             }
+
+                            info!("processed block receiver queue length: {}", processed_block_reciever.len());
+
                             cleanup_without_recv_blocks += 1;
                             cleanup_without_finalized_recv_blocks_meta += 1;
                             cleanup_without_confirmed_recv_blocks_meta += 1;
diff --git a/cluster-endpoints/src/grpc_subscription.rs b/cluster-endpoints/src/grpc_subscription.rs
index 8c56ac09..c536db19 100644
--- a/cluster-endpoints/src/grpc_subscription.rs
+++ b/cluster-endpoints/src/grpc_subscription.rs
@@ -298,6 +298,7 @@ pub fn create_block_processing_task(
 
                 match update {
                     UpdateOneof::Block(block) => {
+                        log::info!("received block, hash: {} slot: {}", block.blockhash, block.slot);
                         block_sx
                             .send(block)
                             .await