diff --git a/src/audio/MacAudioDevice.mm b/src/audio/MacAudioDevice.mm
index 7c26ab9d..c134c7c0 100644
--- a/src/audio/MacAudioDevice.mm
+++ b/src/audio/MacAudioDevice.mm
@@ -46,7 +46,7 @@ thread_local int MacAudioDevice::CurrentCoreAudioId_ = 0;
 constexpr static double kOneNanosecond = 1.0e9;
 
 // The I/O interval time in seconds.
-constexpr static double AUDIO_SAMPLE_BLOCK_SEC = 0.020;
+constexpr static double AUDIO_SAMPLE_BLOCK_SEC = 0.010;
 
 static OSStatus GetIOBufferFrameSizeRange(AudioObjectID inDeviceID,
                                           UInt32* outMinimum,
diff --git a/src/pipeline/AudioPipeline.cpp b/src/pipeline/AudioPipeline.cpp
index bc8eea0f..ed54979d 100644
--- a/src/pipeline/AudioPipeline.cpp
+++ b/src/pipeline/AudioPipeline.cpp
@@ -86,7 +86,6 @@ void AudioPipeline::appendPipelineStep(std::shared_ptr<IPipelineStep> pipelineSt
     pipelineSteps_.push_back(pipelineStep);
     resamplers_.resize(pipelineSteps_.size(), nullptr); // will be updated by reloadResampler_() below.
     reloadResampler_(pipelineSteps_.size() - 1);
-    reloadResultResampler_();
 }
 
 void AudioPipeline::reloadResampler_(int index)