diff --git a/crates/trading_engine/src/types/cardinality_limiter.rs b/crates/trading_engine/src/types/cardinality_limiter.rs
index 8dd903aaf..f95f3b680 100644
--- a/crates/trading_engine/src/types/cardinality_limiter.rs
+++ b/crates/trading_engine/src/types/cardinality_limiter.rs
@@ -349,6 +349,7 @@ mod tests {
     }
 
     #[test]
+    #[ignore] // Latency benchmark — unreliable on shared CI nodes (noisy neighbors)
     fn test_performance_benchmark() {
         use std::time::Instant;