diff --git a/CMakeLists.txt b/CMakeLists.txt
index 0f4806fe044bb..d28f191021fdf 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -18,9 +18,7 @@ cmake_minimum_required(VERSION 3.27.1 FATAL_ERROR)
 project(O2 LANGUAGES C CXX VERSION 1.2.0)
 
 include(CTest)
-add_definitions(-DGPUCA_NO_FAST_MATH=1)
-set(GPUCA_NO_FAST_MATH 1)
-set(GPUCA_NO_FAST_MATH_WHOLEO2 1)
+
 # Project wide setup
 
 # Would better fit inside GPU/CMakeLists.txt, but include GPU/Common directly
diff --git a/Detectors/ITSMFT/ITS/tracking/GPU/cuda/TimeFrameGPU.cu b/Detectors/ITSMFT/ITS/tracking/GPU/cuda/TimeFrameGPU.cu
index d3c56ead7de6c..ff9ef6c80b9a3 100644
--- a/Detectors/ITSMFT/ITS/tracking/GPU/cuda/TimeFrameGPU.cu
+++ b/Detectors/ITSMFT/ITS/tracking/GPU/cuda/TimeFrameGPU.cu
@@ -418,8 +418,8 @@ void TimeFrameGPU<nLayers>::initDevice(IndexTableUtils* utils,
   // mVerticesInChunks.resize(mGpuParams.nTimeFrameChunks);
   // mNVerticesInChunks.resize(mGpuParams.nTimeFrameChunks);
   // mLabelsInChunks.resize(mGpuParams.nTimeFrameChunks);
-  // LOGP(debug, "Size of fixed part is: {} MB", GpuTimeFrameChunk<nLayers>::computeFixedSizeBytes(mGpuParams) / MB);
-  // LOGP(debug, "Size of scaling part is: {} MB", GpuTimeFrameChunk<nLayers>::computeScalingSizeBytes(GpuTimeFrameChunk<nLayers>::computeRofPerChunk(mGpuParams, mAvailMemGB), mGpuParams) / MB);
+  // LOGP(info, "Size of fixed part is: {} MB", GpuTimeFrameChunk<nLayers>::computeFixedSizeBytes(mGpuParams) / MB);
+  // LOGP(info, "Size of scaling part is: {} MB", GpuTimeFrameChunk<nLayers>::computeScalingSizeBytes(GpuTimeFrameChunk<nLayers>::computeRofPerChunk(mGpuParams, mAvailMemGB), mGpuParams) / MB);
   // LOGP(info, "Allocating {} chunks of {} rofs capacity each.", mGpuParams.nTimeFrameChunks, mGpuParams.nROFsPerChunk);
 
   // for (int iChunk{0}; iChunk < mMemChunks.size(); ++iChunk) {
@@ -571,7 +571,7 @@ template <int nLayers>
 void TimeFrameGPU<nLayers>::downloadTrackITSExtDevice(std::vector<CellSeed>& seeds)
 {
   LOGP(debug, "gpu-transfer: downloading {} tracks, for {} MB.", mTrackITSExt.size(), mTrackITSExt.size() * sizeof(o2::its::TrackITSExt) / MB);
-  checkGPUError(cudaMemcpyAsync(mTrackITSExt.data(), mTrackITSExtDevice, mTrackITSExt.size() * sizeof(o2::its::TrackITSExt), cudaMemcpyDeviceToHost, mGpuStreams[0].get()));
+  checkGPUError(cudaMemcpyAsync(mTrackITSExt.data(), mTrackITSExtDevice, seeds.size() * sizeof(o2::its::TrackITSExt), cudaMemcpyDeviceToHost, mGpuStreams[0].get()));
   checkGPUError(cudaHostUnregister(mTrackITSExt.data()));
   checkGPUError(cudaHostUnregister(seeds.data()));
   discardResult(cudaDeviceSynchronize());
diff --git a/Detectors/ITSMFT/ITS/tracking/GPU/cuda/TrackerTraitsGPU.cxx b/Detectors/ITSMFT/ITS/tracking/GPU/cuda/TrackerTraitsGPU.cxx
index 13a5b9f1ce9c3..7f1d6812bc6cd 100644
--- a/Detectors/ITSMFT/ITS/tracking/GPU/cuda/TrackerTraitsGPU.cxx
+++ b/Detectors/ITSMFT/ITS/tracking/GPU/cuda/TrackerTraitsGPU.cxx
@@ -380,7 +380,7 @@ void TrackerTraitsGPU<nLayers>::findRoads(const int iteration)
       for (int iLayer{startLayer - 1}; iLayer > 0 && level > 2; --iLayer) {
         lastCellSeed.swap(updatedCellSeed);
         lastCellId.swap(updatedCellId);
-        updatedCellSeed.clear();
+        std::vector<CellSeed>().swap(updatedCellSeed); /// tame the memory peaks
         updatedCellId.clear();
         processNeighbours(iLayer, --level, lastCellSeed, lastCellId, updatedCellSeed, updatedCellId);
       }
diff --git a/Detectors/ITSMFT/ITS/tracking/GPU/cuda/VertexingKernels.cu b/Detectors/ITSMFT/ITS/tracking/GPU/cuda/VertexingKernels.cu
index d6cba10c7814b..9e99687c3be6a 100644
--- a/Detectors/ITSMFT/ITS/tracking/GPU/cuda/VertexingKernels.cu
+++ b/Detectors/ITSMFT/ITS/tracking/GPU/cuda/VertexingKernels.cu
@@ -40,9 +40,8 @@ void trackletFinderHandler(const Cluster* clustersNextLayer,    // 0 2
                            const unsigned int rofSize,
                            const float phiCut,
                            const size_t maxTrackletsPerCluster)
-                           {
-                            
-                           }
+{
+}
 /*
 GPUd() float smallestAngleDifference(float a, float b)
 {
diff --git a/GPU/Workflow/src/GPUWorkflowITS.cxx b/GPU/Workflow/src/GPUWorkflowITS.cxx
index c2e2c1dc6733a..5f6ec171d27c1 100644
--- a/GPU/Workflow/src/GPUWorkflowITS.cxx
+++ b/GPU/Workflow/src/GPUWorkflowITS.cxx
@@ -26,7 +26,7 @@ namespace o2::gpu
 int GPURecoWorkflowSpec::runITSTracking(o2::framework::ProcessingContext& pc)
 {
   mITSTimeFrame->setDevicePropagator(mGPUReco->GetDeviceO2Propagator());
-  LOGP(info, "GPUChainITS is giving me device propagator: {}", (void*)mGPUReco->GetDeviceO2Propagator());
+  LOGP(debug, "GPUChainITS is giving me device propagator: {}", (void*)mGPUReco->GetDeviceO2Propagator());
   mITSTrackingInterface->run<true>(pc);
   return 0;
 }