diff --git a/testsuite/forge-cli/src/main.rs b/testsuite/forge-cli/src/main.rs
index 00c4834652020..ebf5072e328d3 100644
--- a/testsuite/forge-cli/src/main.rs
+++ b/testsuite/forge-cli/src/main.rs
@@ -6,6 +6,7 @@ use anyhow::{format_err, Context, Result};
 use aptos_config::config::{ChainHealthBackoffValues, ConsensusConfig, PipelineBackpressureValues};
 use aptos_forge::{
     args::TransactionTypeArg,
+    prometheus_metrics::LatencyBreakdownSlice,
     success_criteria::{
         LatencyBreakdownThreshold, LatencyType, MetricsThreshold, StateProgressThreshold,
         SuccessCriteria, SystemMetricsThreshold,
@@ -231,7 +232,7 @@ static SYSTEM_12_CORES_10GB_THRESHOLD: Lazy<SystemMetricsThreshold> = Lazy::new(
     SystemMetricsThreshold::new(
         // Check that we don't use more than 12 CPU cores for 30% of the time.
         MetricsThreshold::new(12.0, 30),
-        // Check that we don't use more than 5 GB of memory for 30% of the time.
+        // Check that we don't use more than 10 GB of memory for 30% of the time.
         MetricsThreshold::new_gb(10.0, 30),
     )
 });
@@ -1523,16 +1524,19 @@ fn realistic_env_max_load_test(
                     (duration.as_secs() / 10).max(60),
                 )
                 .add_system_metrics_threshold(SystemMetricsThreshold::new(
-                    // Check that we don't use more than 12 CPU cores for 30% of the time.
+                    // Check that we don't use more than 14 CPU cores for 30% of the time.
                     MetricsThreshold::new(14.0, max_cpu_threshold),
                     // Check that we don't use more than 10 GB of memory for 30% of the time.
                     MetricsThreshold::new_gb(10.0, 30),
                 ))
-                .add_latency_threshold(3.0, LatencyType::P50)
-                .add_latency_threshold(5.0, LatencyType::P90)
-                .add_latency_breakdown_threshold(LatencyBreakdownThreshold::new_strict(
-                    0.3, 0.25, 0.8, 0.6,
-                ))
+                .add_latency_threshold(3.4, LatencyType::P50)
+                .add_latency_threshold(4.5, LatencyType::P90)
+                .add_latency_breakdown_threshold(LatencyBreakdownThreshold::new_strict(vec![
+                    (LatencyBreakdownSlice::QsBatchToPos, 0.3),
+                    (LatencyBreakdownSlice::QsPosToProposal, 0.25),
+                    (LatencyBreakdownSlice::ConsensusProposalToOrdered, 0.8),
+                    (LatencyBreakdownSlice::ConsensusOrderedToCommit, 0.6),
+                ]))
                 .add_chain_progress(StateProgressThreshold {
                     max_no_progress_secs: 10.0,
                     max_round_gap: 4,
diff --git a/testsuite/forge/src/backend/k8s/prometheus.rs b/testsuite/forge/src/backend/k8s/prometheus.rs
index f59f6810888d7..d0d28b7f729df 100644
--- a/testsuite/forge/src/backend/k8s/prometheus.rs
+++ b/testsuite/forge/src/backend/k8s/prometheus.rs
@@ -105,28 +105,36 @@ pub fn construct_query_with_extra_labels(
     labels_map: &BTreeMap<String, String>,
 ) -> String {
     // edit the query string to insert swarm metadata
-    let mut new_query = query.to_string();
-    let mut label_start_idx = query.find('{').unwrap_or(query.len());
-    if label_start_idx == query.len() {
-        // add a new curly and insert after it
-        new_query.insert_str(query.len(), "{}");
-        label_start_idx += 1;
-    } else {
-        // add a comma prefix to the existing labels and insert before it
-        label_start_idx += 1;
-        new_query.insert(label_start_idx, ',');
-    }
+    let mut new_query = "".to_string();
 
     let mut labels_strs = vec![];
     for (k, v) in labels_map {
         labels_strs.push(format!(r#"{}="{}""#, k, v));
     }
-
     let labels = labels_strs.join(",");
 
-    // assume no collisions in Forge namespace
-    new_query.insert_str(label_start_idx, &labels);
-    new_query
+    let parts: Vec<&str> = query.split_inclusive('{').collect();
+    if parts.len() == 1 {
+        // no labels in query
+        format!("{}{{{}}}", query, labels)
+    } else {
+        let mut parts_iter = parts.into_iter();
+        let prev = parts_iter.next();
+        new_query.push_str(prev.unwrap());
+
+        for part in parts_iter {
+            if part.starts_with('}') {
+                // assume no collisions in Forge namespace
+                new_query.push_str(&labels);
+            } else {
+                // assume no collisions in Forge namespace
+                new_query.push_str(&labels);
+                new_query.push(',');
+            }
+            new_query.push_str(part);
+        }
+        new_query
+    }
 }
 
 pub async fn query_with_metadata(
@@ -169,16 +177,14 @@ pub async fn query_range_with_metadata(
                 new_query
             )
         })?;
-    let range = r.as_range()
-        .ok_or_else(|| {
-            anyhow!(
-                "Failed to get range from prometheus response. start={}, end={}, query={}",
-                start_time,
-                end_time,
-                new_query
-            )
-        })?;
-    info!("For Query {} got range {:?}", new_query, range);
+    let range = r.as_range().ok_or_else(|| {
+        anyhow!(
+            "Failed to get range from prometheus response. start={}, end={}, query={}",
+            start_time,
+            end_time,
+            new_query
+        )
+    })?;
     if range.len() != 1 {
         bail!(
             "Expected only one range vector from prometheus, recieved {} ({:?}). start={}, end={}, query={}",
@@ -191,14 +197,7 @@ pub async fn query_range_with_metadata(
     }
     Ok(range
         .first()
-        .ok_or_else(|| {
-            anyhow!(
-                "Empty range vector returned from prometheus. start={}, end={}, query={}",
-                start_time,
-                end_time,
-                new_query
-            )
-        })?
+        .unwrap() // safe because we checked length above
         .samples()
         .to_vec())
 }
@@ -324,22 +323,32 @@ mod tests {
 
     #[test]
     fn test_create_query() {
-        // test when no existing labels
-        let original_query = "aptos_connections";
         let mut labels_map = BTreeMap::new();
         labels_map.insert("a".to_string(), "a".to_string());
         labels_map.insert("some_label".to_string(), "blabla".to_string());
+
+        // test when no existing labels
+        let original_query = "aptos_connections";
+        let expected_query = r#"aptos_connections{a="a",some_label="blabla"}"#;
+        let new_query = construct_query_with_extra_labels(original_query, &labels_map);
+        assert_eq!(expected_query, new_query);
+
+        // test when empty labels
+        let original_query = "aptos_connections{}";
         let expected_query = r#"aptos_connections{a="a",some_label="blabla"}"#;
         let new_query = construct_query_with_extra_labels(original_query, &labels_map);
         assert_eq!(expected_query, new_query);
 
         // test when existing labels
         let original_query = r#"aptos_connections{abc="123",def="456"}"#;
-        let mut labels_map = BTreeMap::new();
-        labels_map.insert("a".to_string(), "a".to_string());
-        labels_map.insert("some_label".to_string(), "blabla".to_string());
         let expected_query = r#"aptos_connections{a="a",some_label="blabla",abc="123",def="456"}"#;
         let new_query = construct_query_with_extra_labels(original_query, &labels_map);
         assert_eq!(expected_query, new_query);
+
+        // test when multiple queries
+        let original_query = r#"aptos_connections{abc="123",def="456"} - aptos_disconnects{abc="123"} / aptos_count{}"#;
+        let expected_query = r#"aptos_connections{a="a",some_label="blabla",abc="123",def="456"} - aptos_disconnects{a="a",some_label="blabla",abc="123"} / aptos_count{a="a",some_label="blabla"}"#;
+        let new_query = construct_query_with_extra_labels(original_query, &labels_map);
+        assert_eq!(expected_query, new_query);
     }
 }
diff --git a/testsuite/forge/src/success_criteria.rs b/testsuite/forge/src/success_criteria.rs
index a6ab3a782dd0a..5856ee21c905d 100644
--- a/testsuite/forge/src/success_criteria.rs
+++ b/testsuite/forge/src/success_criteria.rs
@@ -105,30 +105,13 @@ pub struct LatencyBreakdownThreshold {
 }
 
 impl LatencyBreakdownThreshold {
-    pub fn new_strict(
-        qs_batch_to_pos_threshold: f64,
-        qs_pos_to_proposal_threshold: f64,
-        consensus_proposal_to_ordered_threshold: f64,
-        consensus_ordered_to_commit_threshold: f64,
-    ) -> Self {
-        let mut thresholds = BTreeMap::new();
-        thresholds.insert(
-            LatencyBreakdownSlice::QsBatchToPos,
-            MetricsThreshold::new(qs_batch_to_pos_threshold, 0),
-        );
-        thresholds.insert(
-            LatencyBreakdownSlice::QsPosToProposal,
-            MetricsThreshold::new(qs_pos_to_proposal_threshold, 0),
-        );
-        thresholds.insert(
-            LatencyBreakdownSlice::ConsensusProposalToOrdered,
-            MetricsThreshold::new(consensus_proposal_to_ordered_threshold, 0),
-        );
-        thresholds.insert(
-            LatencyBreakdownSlice::ConsensusOrderedToCommit,
-            MetricsThreshold::new(consensus_ordered_to_commit_threshold, 0),
-        );
-        Self { thresholds }
+    pub fn new_strict(thresholds: Vec<(LatencyBreakdownSlice, f64)>) -> Self {
+        Self {
+            thresholds: thresholds
+                .into_iter()
+                .map(|(k, v)| (k, MetricsThreshold::new(v, 0)))
+                .collect(),
+        }
     }
 
     pub fn ensure_threshold(&self, metrics: &LatencyBreakdown) -> anyhow::Result<()> {
diff --git a/testsuite/testcases/src/lib.rs b/testsuite/testcases/src/lib.rs
index fbdf6a9a58ef6..4a6b296795634 100644
--- a/testsuite/testcases/src/lib.rs
+++ b/testsuite/testcases/src/lib.rs
@@ -339,7 +339,7 @@ impl dyn NetworkLoadTest {
                 phase_timing[i].end_unixtime_s,
             ))?;
             info!(
-                "latency_breakdown: from {} to {}: {:?}",
+                "Latency breakdown: from {} to {}: {:?}",
                 phase_timing[i].start_unixtime_s, phase_timing[i].end_unixtime_s, latency_breakdown
             );
             stats_by_phase_filtered.push(LoadTestPhaseStats {