diff --git a/srsenb/hdr/phy/phy.h b/srsenb/hdr/phy/phy.h
index 02542d80a..598a75f0e 100644
--- a/srsenb/hdr/phy/phy.h
+++ b/srsenb/hdr/phy/phy.h
@@ -78,7 +78,7 @@ private:
 
   const static int MAX_WORKERS = 4;
 
-  const static int PRACH_WORKER_THREAD_PRIO = 3;
+  const static int PRACH_WORKER_THREAD_PRIO = 5;
   const static int SF_RECV_THREAD_PRIO      = 1;
   const static int WORKERS_THREAD_PRIO      = 2;
 
diff --git a/srsenb/hdr/stack/enb_stack_lte.h b/srsenb/hdr/stack/enb_stack_lte.h
index e0674aaef..ce97bf1d2 100644
--- a/srsenb/hdr/stack/enb_stack_lte.h
+++ b/srsenb/hdr/stack/enb_stack_lte.h
@@ -118,7 +118,7 @@ public:
   void                                   defer_task(srslte::move_task_t task) final;
 
 private:
-  static const int STACK_MAIN_THREAD_PRIO = -1; // Use default high-priority below UHD
+  static const int STACK_MAIN_THREAD_PRIO = 4;
   // thread loop
   void run_thread() override;
   void stop_impl();
diff --git a/srsenb/hdr/stack/gnb_stack_nr.h b/srsenb/hdr/stack/gnb_stack_nr.h
index 913bda089..b920b544f 100644
--- a/srsenb/hdr/stack/gnb_stack_nr.h
+++ b/srsenb/hdr/stack/gnb_stack_nr.h
@@ -114,7 +114,7 @@ private:
   uint32_t current_tti = 10240;
 
   // Thread
-  static const int                 STACK_MAIN_THREAD_PRIO = -1; // Use default high-priority below UHD
+  static const int                 STACK_MAIN_THREAD_PRIO = 4;
   srslte::task_multiqueue          pending_tasks;
   std::vector<srslte::move_task_t> deferred_stack_tasks; ///< enqueues stack tasks from within. Avoids locking
   srslte::task_thread_pool         background_tasks;     ///< Thread pool used for long, low-priority tasks
diff --git a/srsue/hdr/stack/mac/mac.h b/srsue/hdr/stack/mac/mac.h
index 4f6c8cc28..defffa0ff 100644
--- a/srsue/hdr/stack/mac/mac.h
+++ b/srsue/hdr/stack/mac/mac.h
@@ -115,9 +115,6 @@ private:
 
   bool is_in_window(uint32_t tti, int* start, int* len);
 
-  static const int MAC_MAIN_THREAD_PRIO = -1; // Use default high-priority below UHD
-  static const int MAC_PDU_THREAD_PRIO  = 5;
-
   // Interaction with PHY
   phy_interface_mac_lte*                     phy_h   = nullptr;
   rlc_interface_mac*                         rlc_h   = nullptr;
diff --git a/srsue/hdr/stack/ue_stack_lte.h b/srsue/hdr/stack/ue_stack_lte.h
index d98b287d4..25286ef3e 100644
--- a/srsue/hdr/stack/ue_stack_lte.h
+++ b/srsue/hdr/stack/ue_stack_lte.h
@@ -165,7 +165,7 @@ private:
   gw_interface_stack*      gw  = nullptr;
 
   // Thread
-  static const int        STACK_MAIN_THREAD_PRIO = -1; // Use default high-priority below UHD
+  static const int        STACK_MAIN_THREAD_PRIO = 4;
   srslte::task_multiqueue pending_tasks;
   int sync_queue_id = -1, ue_queue_id = -1, gw_queue_id = -1, stack_queue_id = -1, background_queue_id = -1;
   srslte::task_thread_pool             background_tasks;     ///< Thread pool used for long, low-priority tasks
diff --git a/srsue/hdr/stack/ue_stack_nr.h b/srsue/hdr/stack/ue_stack_nr.h
index 3c791e0db..aa9507eaf 100644
--- a/srsue/hdr/stack/ue_stack_nr.h
+++ b/srsue/hdr/stack/ue_stack_nr.h
@@ -134,7 +134,7 @@ private:
   gw_interface_stack*     gw  = nullptr;
 
   // Thread
-  static const int STACK_MAIN_THREAD_PRIO = -1; // Use default high-priority below UHD
+  static const int STACK_MAIN_THREAD_PRIO = 4;
 
   srslte::task_multiqueue pending_tasks;
   int sync_queue_id = -1, ue_queue_id = -1, gw_queue_id = -1, mac_queue_id = -1, background_queue_id = -1;
diff --git a/srsue/hdr/stack/upper/gw.h b/srsue/hdr/stack/upper/gw.h
index eb3e89760..4db1f2a1f 100644
--- a/srsue/hdr/stack/upper/gw.h
+++ b/srsue/hdr/stack/upper/gw.h
@@ -69,7 +69,7 @@ public:
   void add_mch_port(uint32_t lcid, uint32_t port);
 
 private:
-  static const int GW_THREAD_PRIO = 7;
+  static const int GW_THREAD_PRIO = -1;
 
   stack_interface_gw*       stack  = nullptr;
   srslte::byte_buffer_pool* pool   = nullptr;