diff --git a/ci-scripts/yaml_files/5g_rfsimulator_ntn_geo/docker-compose.yaml b/ci-scripts/yaml_files/5g_rfsimulator_ntn_geo/docker-compose.yaml
index 193b3a9064..0414910077 100644
--- a/ci-scripts/yaml_files/5g_rfsimulator_ntn_geo/docker-compose.yaml
+++ b/ci-scripts/yaml_files/5g_rfsimulator_ntn_geo/docker-compose.yaml
@@ -110,7 +110,7 @@ services:
             - NET_ADMIN  # for interface bringup
             - NET_RAW    # for ping
         environment:
-            USE_ADDITIONAL_OPTIONS: --band 254 -C 2488400000 --CO -873500000 -r 25 --numerology 0 --ssb 60 --rfsim --rfsimulator.prop_delay 238.74 --rfsimulator.serveraddr 192.168.71.140 --log_config.global_log_options level,nocolor,time
+            USE_ADDITIONAL_OPTIONS: --band 254 -C 2488400000 --CO -873500000 -r 25 --numerology 0 --ssb 60 --rfsim --rfsimulator.prop_delay 238.74 --rfsimulator.serveraddr 192.168.71.140 --num-ul-actors 1 --log_config.global_log_options level,nocolor,time
         depends_on:
             - oai-gnb
         networks:
diff --git a/executables/nr-ue.c b/executables/nr-ue.c
index 3fd5f00873..f68b49cd3d 100644
--- a/executables/nr-ue.c
+++ b/executables/nr-ue.c
@@ -104,7 +104,9 @@ static void *NRUE_phy_stub_standalone_pnf_task(void *arg);
 static void start_process_slot_tx(void* arg) {
   notifiedFIFO_elt_t *newTx = arg;
   nr_rxtx_thread_data_t *curMsgTx = NotifiedFifoData(newTx);
-  pushNotifiedFIFO(&curMsgTx->UE->ul_actors[curMsgTx->proc.nr_slot_tx % NUM_UL_ACTORS].fifo, newTx);
+  int num_ul_actors_to_use =
+      get_nrUE_params()->num_ul_actors == 0 ? NUM_UL_ACTORS : min(get_nrUE_params()->num_ul_actors, NUM_UL_ACTORS);
+  pushNotifiedFIFO(&curMsgTx->UE->ul_actors[curMsgTx->proc.nr_slot_tx % num_ul_actors_to_use].fifo, newTx);
 }
 
 static size_t dump_L1_UE_meas_stats(PHY_VARS_NR_UE *ue, char *output, size_t max_len)
diff --git a/executables/nr-uesoftmodem.h b/executables/nr-uesoftmodem.h
index f7e3b42a72..28de33770e 100644
--- a/executables/nr-uesoftmodem.h
+++ b/executables/nr-uesoftmodem.h
@@ -15,6 +15,7 @@
 #define  CONFIG_HLP_NTN_INIT_TIME_DRIFT    "Initial NTN DL time drift (feeder link and service link), given in µs/s\n"
 #define  CONFIG_HLP_AUTONOMOUS_TA          "Autonomously update TA based on DL drift (useful if main contribution to DL drift is movement, e.g. LEO satellite)\n"
 #define  CONFIG_HLP_AGC                    "Rx Gain control used for UE\n"
+#define  CONFIG_HLP_NUM_UL_ACTORS          "Number of UL actors to use. Set to 0 to use the default value\n"
 
 /***************************************************************************************************************************************/
 /* command line options definitions, CMDLINE_XXXX_DESC macros are used to initialize paramdef_t arrays which are then used as argument
@@ -66,6 +67,7 @@
   {"ntn-initial-time-drift",       CONFIG_HLP_NTN_INIT_TIME_DRIFT, 0,           .dblptr=&(nrUE_params.ntn_init_time_drift),  .defdblval=0.0,    TYPE_DOUBLE,   0}, \
   {"autonomous-ta",                CONFIG_HLP_AUTONOMOUS_TA,   PARAMFLAG_BOOL,  .iptr=&(nrUE_params.autonomous_ta),          .defintval=0,      TYPE_INT,      0}, \
   {"agc",                          CONFIG_HLP_AGC,             PARAMFLAG_BOOL,  .iptr=&(nrUE_params.agc),                    .defintval=0,      TYPE_INT,      0}, \
+  {"num-ul-actors",                CONFIG_HLP_NUM_UL_ACTORS,   0,               .iptr=&nrUE_params.num_ul_actors,            .defintval=0,     TYPE_INT,      0}, \
 }
 // clang-format on
 
@@ -101,6 +103,7 @@ typedef struct {
   double rx_gain_off;
   int vcdflag;
   int tx_max_power;
+  int num_ul_actors;
 } nrUE_params_t;
 extern uint64_t get_nrUE_optmask(void);
 extern uint64_t set_nrUE_optmask(uint64_t bitmask);