diff --git a/psrdada_cpp/effelsberg/edd/src/GatedSpectrometer.cu b/psrdada_cpp/effelsberg/edd/src/GatedSpectrometer.cu
index c84cd8f7ac685492aeadfb13234b885176320606..8c1c7ec9b8f6acd80b5ecaab57c43e0e41725e8b 100644
--- a/psrdada_cpp/effelsberg/edd/src/GatedSpectrometer.cu
+++ b/psrdada_cpp/effelsberg/edd/src/GatedSpectrometer.cu
@@ -375,8 +375,8 @@ void GatedPowerSpectrumOutput::swap(cudaStream_t &_proc_stream)
 
 void GatedPowerSpectrumOutput::data2Host(cudaStream_t &_d2h_stream)
 {
-    // copy data to host if block is finished
-  CUDA_ERROR_CHECK(cudaStreamSynchronize(_d2h_stream));
+    BOOST_LOG_TRIVIAL(debug) << "Copying data2Host for " << G0._noOfBitSets.size() << " blocks.";
+  //CUDA_ERROR_CHECK(cudaStreamSynchronize(_d2h_stream));
 
   for (size_t i = 0; i < G0._noOfBitSets.size(); i++)
   {