diff --git a/ledger/metrics/src/test/suite/scala/com/daml/metrics/InstrumentedSourceSpec.scala b/ledger/metrics/src/test/suite/scala/com/daml/metrics/InstrumentedSourceSpec.scala
index 5d8d6b8c32f5..424c7325ce0a 100644
--- a/ledger/metrics/src/test/suite/scala/com/daml/metrics/InstrumentedSourceSpec.scala
+++ b/ledger/metrics/src/test/suite/scala/com/daml/metrics/InstrumentedSourceSpec.scala
@@ -143,6 +143,7 @@ final class InstrumentedSourceSpec extends AsyncFlatSpec with Matchers with Akka
     }
   }
 
+  // this test suite is disabled since it's timing related expectations proven to be very flaky in automated tests
   behavior of "InstrumentedSource.bufferedSource"
 
   def throttledTest(producerMaxSpeed: Int, consumerMaxSpeed: Int): Future[List[Long]] = {
@@ -166,7 +167,7 @@ final class InstrumentedSourceSpec extends AsyncFlatSpec with Matchers with Akka
   def samplePercentage(samples: List[Long])(filter: Long => Boolean): Double =
     samples.count(filter).toDouble / samples.size.toDouble * 100.0
 
-  it should "signal mostly full buffer if slow consumer" in {
+  it should "signal mostly full buffer if slow consumer" ignore {
     throttledTest(
       producerMaxSpeed = 10,
       consumerMaxSpeed = 5,
@@ -176,7 +177,7 @@ final class InstrumentedSourceSpec extends AsyncFlatSpec with Matchers with Akka
     }
   }
 
-  it should "signal mostly empty buffer if fast consumer" in {
+  it should "signal mostly empty buffer if fast consumer" ignore {
     throttledTest(
       producerMaxSpeed = 10,
       consumerMaxSpeed = 20,
@@ -186,7 +187,7 @@ final class InstrumentedSourceSpec extends AsyncFlatSpec with Matchers with Akka
     }
   }
 
-  it should "signal mostly empty buffer if speeds are aligned" in {
+  it should "signal mostly empty buffer if speeds are aligned" ignore {
     throttledTest(
       producerMaxSpeed = 10,
       consumerMaxSpeed = 10,
@@ -196,7 +197,7 @@ final class InstrumentedSourceSpec extends AsyncFlatSpec with Matchers with Akka
     }
   }
 
-  it should "signal mostly empty buffer if consumer slightly faster" in {
+  it should "signal mostly empty buffer if consumer slightly faster" ignore {
     throttledTest(
       producerMaxSpeed = 10,
       consumerMaxSpeed = 12,
@@ -206,7 +207,7 @@ final class InstrumentedSourceSpec extends AsyncFlatSpec with Matchers with Akka
     }
   }
 
-  it should "signal mostly full buffer if consumer slightly slower" in {
+  it should "signal mostly full buffer if consumer slightly slower" ignore {
     throttledTest(
       producerMaxSpeed = 10,
       consumerMaxSpeed = 8,