diff --git a/openair1/PHY/INIT/nr_init.c b/openair1/PHY/INIT/nr_init.c
index 495f26e986..ea42817841 100644
--- a/openair1/PHY/INIT/nr_init.c
+++ b/openair1/PHY/INIT/nr_init.c
@@ -204,12 +204,10 @@ void phy_init_nr_gNB(PHY_VARS_gNB *gNB)
     NR_gNB_PUSCH *pusch = &gNB->pusch_vars[ULSCH_id];
     pusch->ul_ch_estimates = (int32_t **)malloc16(n_buf * sizeof(int32_t *));
     pusch->ptrs_phase_per_slot = (int32_t **)malloc16(n_buf * sizeof(int32_t *));
-    pusch->ul_ch_estimates_time = (int32_t **)malloc16(n_buf * sizeof(int32_t *));
     pusch->rxdataF_comp = (int32_t **)malloc16(n_buf * sizeof(int32_t *));
     pusch->llr_layers = (int16_t **)malloc16(max_ul_mimo_layers * sizeof(int32_t *));
     for (int i = 0; i < n_buf; i++) {
       pusch->ul_ch_estimates[i] = (int32_t *)malloc16_clear(sizeof(int32_t) * fp->ofdm_symbol_size * fp->symbols_per_slot);
-      pusch->ul_ch_estimates_time[i] = (int32_t *)malloc16_clear(sizeof(int32_t) * fp->ofdm_symbol_size);
       pusch->ptrs_phase_per_slot[i] = (int32_t *)malloc16_clear(sizeof(int32_t) * fp->symbols_per_slot); // symbols per slot
       pusch->rxdataF_comp[i] = (int32_t *)malloc16_clear(sizeof(int32_t) * nb_re_pusch2 * fp->symbols_per_slot);
     }
@@ -279,14 +277,12 @@ void phy_free_nr_gNB(PHY_VARS_gNB *gNB)
       free_and_zero(pusch_vars->llr_layers[i]);
     for (int i = 0; i < n_buf; i++) {
       free_and_zero(pusch_vars->ul_ch_estimates[i]);
-      free_and_zero(pusch_vars->ul_ch_estimates_time[i]);
       free_and_zero(pusch_vars->ptrs_phase_per_slot[i]);
       free_and_zero(pusch_vars->rxdataF_comp[i]);
     }
     free_and_zero(pusch_vars->llr_layers);
     free_and_zero(pusch_vars->ul_ch_estimates);
     free_and_zero(pusch_vars->ptrs_phase_per_slot);
-    free_and_zero(pusch_vars->ul_ch_estimates_time);
     free_and_zero(pusch_vars->ul_valid_re_per_slot);
     free_and_zero(pusch_vars->rxdataF_comp);
 
diff --git a/openair1/PHY/NR_ESTIMATION/nr_ul_channel_estimation.c b/openair1/PHY/NR_ESTIMATION/nr_ul_channel_estimation.c
index 8ef3cb1b0c..5d318d6fd8 100644
--- a/openair1/PHY/NR_ESTIMATION/nr_ul_channel_estimation.c
+++ b/openair1/PHY/NR_ESTIMATION/nr_ul_channel_estimation.c
@@ -33,6 +33,7 @@
 #include "PHY/NR_REFSIG/ul_ref_seq_nr.h"
 #include "executables/softmodem-common.h"
 #include "nr_phy_common.h"
+#include "openair1/PHY/TOOLS/phy_scope_interface.h"
 
 //#define DEBUG_CH
 //#define DEBUG_PUSCH
@@ -41,6 +42,29 @@
 #define NO_INTERP 1
 #define dBc(x, y) (dB_fixed(((int32_t)(x)) * (x) + ((int32_t)(y)) * (y)))
 
+typedef struct puschAntennaProc_s {
+  unsigned char Ns;
+  int nl;
+  unsigned short p;
+  unsigned char symbol;
+  unsigned short bwp_start_subcarrier;
+  int aarx;
+  int beam_nb;
+  int numAntennas;
+  nfapi_nr_pusch_pdu_t *pusch_pdu;
+  int *max_ch;
+  c16_t *pilot;
+  int *nest_count;
+  uint64_t *noise_amp2;
+  delay_t *delay;
+  int chest_freq;
+  NR_gNB_PUSCH *pusch_vars;
+  NR_DL_FRAME_PARMS *frame_parms;
+  c16_t ***rxdataF;
+  task_ans_t *ans;
+  scopeData_t *scope;
+} puschAntennaProc_t;
+
 __attribute__((always_inline)) inline c16_t c32x16cumulVectVectWithSteps(c16_t *in1,
                                                                          int *offset1,
                                                                          const int step1,
@@ -142,8 +166,13 @@ static void nr_pusch_antenna_processing(void *arg)
         }
         pilot_cnt += 2;
       }
-
-      nr_est_delay(frame_parms->ofdm_symbol_size, ul_ls_est, (c16_t *)pusch_vars->ul_ch_estimates_time[antenna], delay);
+      c16_t ch_estimates_time[frame_parms->ofdm_symbol_size] __attribute__((aligned(32)));
+      nr_est_delay(frame_parms->ofdm_symbol_size, ul_ls_est, ch_estimates_time, delay);
+      if (rdata->scope && antenna == 0) {
+        metadata mt = {.slot = -1, .frame = -1};
+        scopeData_t *tmp = rdata->scope;
+        tmp->copyData(tmp, gNBulDelay, ch_estimates_time, sizeof(c16_t), 1, frame_parms->ofdm_symbol_size, 0, &mt);
+      }
       int delay_idx = get_delay_idx(delay->est_delay, MAX_DELAY_COMP);
       c16_t *ul_delay_table = frame_parms->delay_table[delay_idx];
 
@@ -231,7 +260,13 @@ static void nr_pusch_antenna_processing(void *arg)
       }
 
       // Delay compensation
-      nr_est_delay(frame_parms->ofdm_symbol_size, ul_ls_est, (c16_t *)pusch_vars->ul_ch_estimates_time[antenna], delay);
+      c16_t ch_estimates_time[frame_parms->ofdm_symbol_size] __attribute__((aligned(32)));
+      nr_est_delay(frame_parms->ofdm_symbol_size, ul_ls_est, ch_estimates_time, delay);
+      if (rdata->scope && antenna == 0) {
+        metadata mt = {.slot = -1, .frame = -1};
+        scopeData_t *tmp = rdata->scope;
+        tmp->copyData(tmp, gNBulDelay, ch_estimates_time, sizeof(c16_t), 1, frame_parms->ofdm_symbol_size, 0, &mt);
+      }
       int delay_idx = get_delay_idx(-delay->est_delay, MAX_DELAY_COMP);
       c16_t *ul_delay_table = frame_parms->delay_table[delay_idx];
       for (int n = 0; n < nb_rb_pusch * NR_NB_SC_PER_RB; n++) {
@@ -531,6 +566,7 @@ int nr_pusch_channel_estimation(PHY_VARS_gNB *gNB,
     rdata->pusch_vars = &gNB->pusch_vars[ul_id];
     rdata->chest_freq = gNB->chest_freq;
     rdata->rxdataF = gNB->common_vars.rxdataF;
+    rdata->scope = gNB->scopeData;
     rdata->ans = &ans;
     // Call the nr_pusch_antenna_processing function
     if (job_id == num_jobs - 1) {
diff --git a/openair1/PHY/NR_TRANSPORT/pucch_rx.c b/openair1/PHY/NR_TRANSPORT/pucch_rx.c
index 2ec081d825..1f7fe8707d 100644
--- a/openair1/PHY/NR_TRANSPORT/pucch_rx.c
+++ b/openair1/PHY/NR_TRANSPORT/pucch_rx.c
@@ -1096,7 +1096,7 @@ void nr_decode_pucch2(PHY_VARS_gNB *gNB,
             *ch_ls_ptr++ = rdmrs_gold[i];
       }
     }
-    c16_t ch_temp[128] __attribute__((aligned(32))) = {0};
+    c16_t ch_temp[128] __attribute__((aligned(32)));
     delay_t delay = {0};
     nr_est_delay(128, ch_ls, ch_temp, &delay);
 
diff --git a/openair1/PHY/NR_UE_ESTIMATION/nr_dl_channel_estimation.c b/openair1/PHY/NR_UE_ESTIMATION/nr_dl_channel_estimation.c
index 40bae6eac7..e585c28d04 100644
--- a/openair1/PHY/NR_UE_ESTIMATION/nr_dl_channel_estimation.c
+++ b/openair1/PHY/NR_UE_ESTIMATION/nr_dl_channel_estimation.c
@@ -1121,7 +1121,6 @@ void NFAPI_NR_DMRS_TYPE1_linear_interp(NR_DL_FRAME_PARMS *frame_parms,
   }
 
   c16_t ch_estimates_time[frame_parms->ofdm_symbol_size] __attribute__((aligned(32)));
-  memset(ch_estimates_time, 0, sizeof(ch_estimates_time));
   nr_est_delay(frame_parms->ofdm_symbol_size, dl_ls_est, ch_estimates_time, delay);
   int delay_idx = get_delay_idx(delay->est_delay, MAX_DELAY_COMP);
   c16_t *dl_delay_table = frame_parms->delay_table[delay_idx];
@@ -1282,7 +1281,6 @@ void NFAPI_NR_DMRS_TYPE2_linear_interp(NR_DL_FRAME_PARMS *frame_parms,
   }
 
   c16_t ch_estimates_time[frame_parms->ofdm_symbol_size] __attribute__((aligned(32)));
-  memset(ch_estimates_time, 0, sizeof(ch_estimates_time));
   nr_est_delay(frame_parms->ofdm_symbol_size, dl_ls_est, ch_estimates_time, delay);
   int delay_idx = get_delay_idx(delay->est_delay, MAX_DELAY_COMP);
   c16_t *dl_delay_table = frame_parms->delay_table[delay_idx];
diff --git a/openair1/PHY/TOOLS/nr_phy_scope.c b/openair1/PHY/TOOLS/nr_phy_scope.c
index da89b41960..abf3db9451 100644
--- a/openair1/PHY/TOOLS/nr_phy_scope.c
+++ b/openair1/PHY/TOOLS/nr_phy_scope.c
@@ -456,9 +456,8 @@ static void timeSignal (OAIgraph_t *graph, PHY_VARS_gNB *phy_vars_gnb, RU_t *phy
 */
 
 static void timeResponse (OAIgraph_t *graph, scopeData_t *p, int nb_UEs) {
-  const int len = p->gNB->frame_parms.ofdm_symbol_size;
-  if (!len)
-    // gnb not yet initialized, many race conditions in the scope
+  scopeGraphData_t *val = p->liveData[gNBulDelay];
+  if (!val || !val->dataSize)
     return;
 #ifdef WEBSRVSCOPE
   websrv_scopedata_msg_t *msg = NULL;
@@ -466,38 +465,25 @@ static void timeResponse (OAIgraph_t *graph, scopeData_t *p, int nb_UEs) {
   float *values = (float *)msg->data_xy;
 #else
   float *values, *time;
-  oai_xygraph_getbuff(graph, &time, &values, len, 0);
+  oai_xygraph_getbuff(graph, &time, &values, val->lineSz, 0);
 #endif
 
-  const int ant = 0; // display antenna 0 for each UE
+  // We display UEs randomly, with one buffer
+  c16_t *samples = (c16_t *)(val + 1);
+  for (int i = 0; i < val->lineSz; i++) {
+    values[i] = SquaredNorm(samples[i]);
+  }
 #ifdef WEBSRVSCOPE
   int uestart = nb_UEs - 1; // web scope shows one UE signal, that can be selected from GUI
+  msg->header.msgtype = SCOPEMSG_TYPE_DATA;
+  msg->header.chartid = graph->chartid;
+  msg->header.datasetid = graph->datasetid;
+  msg->header.msgseg = 0;
+  msg->header.update = 1;
+  websrv_scope_senddata(val->lineSz, 4, msg);
 #else
-  int uestart = 0; // xforms scope designed to display nb_UEs signals
+  oai_xygraph(graph, time, values, val->lineSz, 0, 10);
 #endif
-  for (int ue = uestart; ue < nb_UEs; ue++) {
-    if (p->gNB->pusch_vars &&
-        p->gNB->pusch_vars[ue].ul_ch_estimates_time &&
-        p->gNB->pusch_vars[ue].ul_ch_estimates_time[ant] ) {
-      scopeSample_t *data= (scopeSample_t *)p->gNB->pusch_vars[ue].ul_ch_estimates_time[ant];
-
-      if (data != NULL) {
-        for (int i=0; i<len; i++) {
-          values[i] = SquaredNorm(data[i]);
-        }
-#ifdef WEBSRVSCOPE
-        msg->header.msgtype = SCOPEMSG_TYPE_DATA;
-        msg->header.chartid = graph->chartid;
-        msg->header.datasetid = graph->datasetid;
-        msg->header.msgseg = 0;
-        msg->header.update = 1;
-        websrv_scope_senddata(len, 4, msg);
-#else
-        oai_xygraph(graph,time,values, len, ue, 10);
-#endif
-      }
-    }
-  }
 }
 
 static void gNBfreqWaterFall (OAIgraph_t *graph, scopeData_t *p, int nb_UEs) {
diff --git a/openair1/PHY/TOOLS/phy_scope_interface.h b/openair1/PHY/TOOLS/phy_scope_interface.h
index 59e7d93dd9..181bf5985b 100644
--- a/openair1/PHY/TOOLS/phy_scope_interface.h
+++ b/openair1/PHY/TOOLS/phy_scope_interface.h
@@ -70,6 +70,7 @@ enum scopeDataType {
   psbchDlChEstimateTime,
   psbchLlr,
   psbchRxdataF_comp,
+  gNBulDelay,
   MAX_SCOPE_TYPES,
   gNBPuschRxIq = MAX_SCOPE_TYPES,
   gNBPuschLlr,
diff --git a/openair1/PHY/defs_gNB.h b/openair1/PHY/defs_gNB.h
index 47d41db44b..c7588c5e45 100644
--- a/openair1/PHY/defs_gNB.h
+++ b/openair1/PHY/defs_gNB.h
@@ -296,12 +296,7 @@ typedef struct {
   int32_t debugBuff_sample_offset;
 } NR_gNB_COMMON;
 
-
 typedef struct {
-  /// \brief Hold the channel estimates in time domain based on DRS.
-  /// - first index: rx antenna id [0..nb_antennas_rx[
-  /// - second index: ? [0..4*ofdm_symbol_size[
-  int32_t **ul_ch_estimates_time;
   /// \brief Hold the channel estimates in frequency domain based on DRS.
   /// - first index: rx antenna id [0..nb_antennas_rx[
   /// - second index: ? [0..12*N_RB_UL*frame_parms->symbols_per_tti[
@@ -577,28 +572,6 @@ union puschSymbolReqUnion {
   uint64_t p;
 };
 
-typedef struct puschAntennaProc_s {
-  unsigned char Ns;
-  int nl;
-  unsigned short p;
-  unsigned char symbol;
-  unsigned short bwp_start_subcarrier;
-  int aarx;
-  int beam_nb;
-  int numAntennas;
-  nfapi_nr_pusch_pdu_t *pusch_pdu;
-  int *max_ch;
-  c16_t *pilot;
-  int *nest_count;
-  uint64_t *noise_amp2;
-  delay_t *delay;
-  int chest_freq;
-  NR_gNB_PUSCH *pusch_vars;
-  NR_DL_FRAME_PARMS *frame_parms;
-  c16_t ***rxdataF;
-  task_ans_t* ans;
-} puschAntennaProc_t;
-
 struct puschAntennaReqId {
   uint16_t ul_id;
   uint16_t spare;
diff --git a/openair1/PHY/nr_phy_common/src/nr_phy_common.c b/openair1/PHY/nr_phy_common/src/nr_phy_common.c
index 9aa45e20b3..140d6a043a 100644
--- a/openair1/PHY/nr_phy_common/src/nr_phy_common.c
+++ b/openair1/PHY/nr_phy_common/src/nr_phy_common.c
@@ -20,7 +20,6 @@
  */
 
 #include "nr_phy_common.h"
-
 #ifdef __aarch64__
 #define USE_128BIT
 #endif
@@ -363,7 +362,7 @@ void freq2time(uint16_t ofdm_symbol_size, int16_t *freq_signal, int16_t *time_si
 
 void nr_est_delay(int ofdm_symbol_size, const c16_t *ls_est, c16_t *ch_estimates_time, delay_t *delay)
 {
-  freq2time(ofdm_symbol_size, (int16_t *)ls_est, (int16_t *)ch_estimates_time);
+  idft(get_idft(ofdm_symbol_size), (int16_t *)ls_est, (int16_t *)ch_estimates_time, 1);
 
   int max_pos = delay->delay_max_pos;
   int max_val = delay->delay_max_val;