diff --git a/library/core/src/main/java/com/google/android/exoplayer2/upstream/DefaultBandwidthMeter.java b/library/core/src/main/java/com/google/android/exoplayer2/upstream/DefaultBandwidthMeter.java
index 0309292164..1b69455695 100644
--- a/library/core/src/main/java/com/google/android/exoplayer2/upstream/DefaultBandwidthMeter.java
+++ b/library/core/src/main/java/com/google/android/exoplayer2/upstream/DefaultBandwidthMeter.java
@@ -326,7 +326,7 @@ public final class DefaultBandwidthMeter implements BandwidthMeter, TransferList
   @Override
   public synchronized void onTransferStart(
       DataSource source, DataSpec dataSpec, boolean isNetwork) {
-    if (!isNetwork) {
+    if (!isTransferAtFullNetworkSpeed(dataSpec, isNetwork)) {
       return;
     }
     if (streamCount == 0) {
@@ -338,7 +338,7 @@ public final class DefaultBandwidthMeter implements BandwidthMeter, TransferList
   @Override
   public synchronized void onBytesTransferred(
       DataSource source, DataSpec dataSpec, boolean isNetwork, int bytes) {
-    if (!isNetwork) {
+    if (!isTransferAtFullNetworkSpeed(dataSpec, isNetwork)) {
       return;
     }
     sampleBytesTransferred += bytes;
@@ -346,7 +346,7 @@ public final class DefaultBandwidthMeter implements BandwidthMeter, TransferList
 
   @Override
   public synchronized void onTransferEnd(DataSource source, DataSpec dataSpec, boolean isNetwork) {
-    if (!isNetwork) {
+    if (!isTransferAtFullNetworkSpeed(dataSpec, isNetwork)) {
       return;
     }
     Assertions.checkState(streamCount > 0);
@@ -420,6 +420,10 @@ public final class DefaultBandwidthMeter implements BandwidthMeter, TransferList
     return initialBitrateEstimate;
   }
 
+  private static boolean isTransferAtFullNetworkSpeed(DataSpec dataSpec, boolean isNetwork) {
+    return isNetwork && !dataSpec.isFlagSet(DataSpec.FLAG_MIGHT_NOT_USE_FULL_NETWORK_SPEED);
+  }
+
   /*
    * Note: This class only holds a weak reference to DefaultBandwidthMeter instances. It should not
    * be made non-static, since doing so adds a strong reference (i.e. DefaultBandwidthMeter.this).