diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5b32f273f..a576e36f3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,8 @@
 # OpenCore Legacy Patcher changelog
 
+## 2.4.0
+- Reduce CPU usage on main UI thread
+
 ## 2.3.2
 - Resolve erroring in Passwords app and Safari Autofill on T1 Macs running 15.4 or later
 - Increment binaries:
diff --git a/opencore_legacy_patcher/application_entry.py b/opencore_legacy_patcher/application_entry.py
index 8617f5b2d..c1b7d454b 100644
--- a/opencore_legacy_patcher/application_entry.py
+++ b/opencore_legacy_patcher/application_entry.py
@@ -130,7 +130,7 @@ class OpenCoreLegacyPatcher:
 
         if not any(x in sys.argv for x in ignore_args):
             while self.constants.unpack_thread.is_alive():
-                time.sleep(0.1)
+                time.sleep(self.constants.thread_sleep_interval)
 
         arguments.arguments(self.constants)
 
diff --git a/opencore_legacy_patcher/constants.py b/opencore_legacy_patcher/constants.py
index 550856877..eeaf9e909 100644
--- a/opencore_legacy_patcher/constants.py
+++ b/opencore_legacy_patcher/constants.py
@@ -155,6 +155,8 @@ class Constants:
         self.unpack_thread                   = None  #  Determine if unpack thread finished (threading.Thread)
         self.update_stage:               int = 0  #     Determine update stage (see gui_support.py)
         self.log_filepath:              Path = None  #  Path to log file
+        self.thread_sleep_interval:    float = 0.1   #  Sleep interval between UI updates (seconds) - reduce refresh-rate to reduce CPU-usage
+        self.thread_nap_interval:      float = 0.01  #  Short Sleep interval between UI updates (seconds) - for faster UI updates of the progress bar
 
         self.commit_info: tuple = (None, None, None)  # Commit info (Branch, Commit Date, Commit URL)
 
diff --git a/opencore_legacy_patcher/wx_gui/gui_build.py b/opencore_legacy_patcher/wx_gui/gui_build.py
index f673a2b80..796ba8c0b 100644
--- a/opencore_legacy_patcher/wx_gui/gui_build.py
+++ b/opencore_legacy_patcher/wx_gui/gui_build.py
@@ -6,6 +6,7 @@ import wx
 import logging
 import threading
 import traceback
+import time
 
 from .. import constants
 
@@ -101,12 +102,12 @@ class BuildFrame(wx.Frame):
         """
         while gui_support.PayloadMount(self.constants, self).is_unpack_finished() is False:
             wx.Yield()
+            time.sleep(self.constants.thread_sleep_interval)
 
         thread = threading.Thread(target=self._build)
         thread.start()
 
-        while thread.is_alive():
-            wx.Yield()
+        gui_support.wait_for_thread(thread)
 
         self.return_button.Enable()
 
diff --git a/opencore_legacy_patcher/wx_gui/gui_cache_os_update.py b/opencore_legacy_patcher/wx_gui/gui_cache_os_update.py
index 5f6db193c..e3dfd0113 100644
--- a/opencore_legacy_patcher/wx_gui/gui_cache_os_update.py
+++ b/opencore_legacy_patcher/wx_gui/gui_cache_os_update.py
@@ -76,13 +76,11 @@ class OSUpdateFrame(wx.Frame):
         if results[HardwarePatchsetSettings.KERNEL_DEBUG_KIT_REQUIRED] is True:
             kdk_thread = threading.Thread(target=_kdk_thread_spawn)
             kdk_thread.start()
-            while kdk_thread.is_alive():
-                wx.Yield()
+            gui_support.wait_for_thread(kdk_thread)
         if results[HardwarePatchsetSettings.METALLIB_SUPPORT_PKG_REQUIRED] is True:
             metallib_thread = threading.Thread(target=_metallib_thread_spawn)
             metallib_thread.start()
-            while metallib_thread.is_alive():
-                wx.Yield()
+            gui_support.wait_for_thread(metallib_thread)
 
 
         download_objects = {
@@ -149,8 +147,7 @@ class OSUpdateFrame(wx.Frame):
         kdk_checksum_thread = threading.Thread(target=_validate_kdk_checksum_thread)
         kdk_checksum_thread.start()
 
-        while kdk_checksum_thread.is_alive():
-            wx.Yield()
+        gui_support.wait_for_thread(kdk_checksum_thread)
 
         if self.kdk_checksum_result is False:
             logging.error("KDK checksum validation failed")
@@ -172,8 +169,7 @@ class OSUpdateFrame(wx.Frame):
         kdk_install_thread = threading.Thread(target=_install_kdk_thread)
         kdk_install_thread.start()
 
-        while kdk_install_thread.is_alive():
-            wx.Yield()
+        gui_support.wait_for_thread(kdk_install_thread)
 
         if self.kdk_install_result is False:
             logging.info("Failed to install KDK")
@@ -194,8 +190,7 @@ class OSUpdateFrame(wx.Frame):
         metallib_install_thread = threading.Thread(target=_install_metallib_thread)
         metallib_install_thread.start()
 
-        while metallib_install_thread.is_alive():
-            wx.Yield()
+        gui_support.wait_for_thread(metallib_install_thread)
 
         if self.metallib_install_result is False:
             logging.info("Failed to install Metallib")
diff --git a/opencore_legacy_patcher/wx_gui/gui_download.py b/opencore_legacy_patcher/wx_gui/gui_download.py
index aca36e9aa..6b34e578b 100644
--- a/opencore_legacy_patcher/wx_gui/gui_download.py
+++ b/opencore_legacy_patcher/wx_gui/gui_download.py
@@ -4,6 +4,7 @@ gui_download.py: Generate UI for downloading files
 
 import wx
 import logging
+import time
 
 from .. import constants
 
@@ -86,6 +87,7 @@ class DownloadFrame(wx.Frame):
             label_amount.Centre(wx.HORIZONTAL)
 
             wx.Yield()
+            time.sleep(self.constants.thread_sleep_interval)
 
         if self.download_obj.download_complete is False and self.user_cancelled is False:
             wx.MessageBox(f"Download failed: \n{self.download_obj.error_msg}", "Error", wx.OK | wx.ICON_ERROR)
diff --git a/opencore_legacy_patcher/wx_gui/gui_install_oc.py b/opencore_legacy_patcher/wx_gui/gui_install_oc.py
index d5375d6d5..ef4ef4c8f 100644
--- a/opencore_legacy_patcher/wx_gui/gui_install_oc.py
+++ b/opencore_legacy_patcher/wx_gui/gui_install_oc.py
@@ -103,9 +103,7 @@ class InstallOCFrame(wx.Frame):
         thread = threading.Thread(target=self._fetch_disks)
         thread.start()
 
-        while thread.is_alive():
-            wx.Yield()
-            continue
+        gui_support.wait_for_thread(thread)
 
         self.progress_bar_animation.stop_pulse()
         self.progress_bar.Hide()
@@ -281,8 +279,7 @@ class InstallOCFrame(wx.Frame):
         thread = threading.Thread(target=self._install_oc, args=(partition,))
         thread.start()
 
-        while thread.is_alive():
-            wx.Yield()
+        gui_support.wait_for_thread(thread)
 
         if self.result is True:
             if self.constants.update_stage != gui_support.AutoUpdateStages.INACTIVE and self.constants.detected_os >= os_data.os_data.big_sur:
diff --git a/opencore_legacy_patcher/wx_gui/gui_macos_installer_download.py b/opencore_legacy_patcher/wx_gui/gui_macos_installer_download.py
index 27da9501f..a05a271e2 100644
--- a/opencore_legacy_patcher/wx_gui/gui_macos_installer_download.py
+++ b/opencore_legacy_patcher/wx_gui/gui_macos_installer_download.py
@@ -149,8 +149,7 @@ class macOSInstallerDownloadFrame(wx.Frame):
         thread = threading.Thread(target=_fetch_installers)
         thread.start()
 
-        while thread.is_alive():
-            wx.Yield()
+        gui_support.wait_for_thread(thread)
 
         progress_bar_animation.stop_pulse()
         progress_bar.Hide()
@@ -412,8 +411,7 @@ class macOSInstallerDownloadFrame(wx.Frame):
         self.Show()
 
         # Wait for thread to finish
-        while thread.is_alive():
-            wx.Yield()
+        gui_support.wait_for_thread(thread)
 
         progress_bar_animation.stop_pulse()
         progress_bar.Hide()
diff --git a/opencore_legacy_patcher/wx_gui/gui_macos_installer_flash.py b/opencore_legacy_patcher/wx_gui/gui_macos_installer_flash.py
index e25923c05..80913b548 100644
--- a/opencore_legacy_patcher/wx_gui/gui_macos_installer_flash.py
+++ b/opencore_legacy_patcher/wx_gui/gui_macos_installer_flash.py
@@ -88,8 +88,7 @@ class macOSInstallerFlashFrame(wx.Frame):
         thread = threading.Thread(target=fetch_installers)
         thread.start()
 
-        while thread.is_alive():
-            wx.Yield()
+        gui_support.wait_for_thread(thread)
 
         frame_modal = wx.Dialog(self, title=self.title, size=(350, 200))
 
@@ -180,8 +179,7 @@ class macOSInstallerFlashFrame(wx.Frame):
         thread = threading.Thread(target=_fetch_disks)
         thread.start()
 
-        while thread.is_alive():
-            wx.Yield()
+        gui_support.wait_for_thread(thread)
 
         self.frame_modal = wx.Dialog(self, title=self.title, size=(350, 200))
 
@@ -317,7 +315,9 @@ class macOSInstallerFlashFrame(wx.Frame):
             except:
                 bytes_written = 0
             wx.CallAfter(progress_bar.SetValue, bytes_written)
+
             wx.Yield()
+            time.sleep(self.constants.thread_sleep_interval)
 
         if self.result is False:
             logging.error("Failed to flash installer, cannot continue.")
@@ -370,8 +370,7 @@ class macOSInstallerFlashFrame(wx.Frame):
         thread = threading.Thread(target=prepare_script, args=(self, installer_path, disk, self.constants))
         thread.start()
 
-        while thread.is_alive():
-            wx.Yield()
+        gui_support.wait_for_thread(thread)
 
         return self.prepare_result
 
@@ -399,10 +398,11 @@ class macOSInstallerFlashFrame(wx.Frame):
             return False
 
         logging.info("Successfully created macOS installer")
-        while thread.is_alive():
-            # wait for download_thread to finish
-            # though highly unlikely this thread is still alive (flashing an Installer will take a while)
-            time.sleep(0.1)
+
+        # wait for download_thread to finish
+        # though highly unlikely this thread is still alive (flashing an Installer will take a while)
+        gui_support.wait_for_thread(thread)
+
         logging.info("Installing Root Patcher to drive")
         self._install_installer_pkg(disk)
 
@@ -617,8 +617,7 @@ class macOSInstallerFlashFrame(wx.Frame):
 
         thread = threading.Thread(target=_integrity_check)
         thread.start()
-        while thread.is_alive():
-            wx.Yield()
+        gui_support.wait_for_thread(thread)
 
         if error_message == "":
             logging.info("Installer pkg validated")
diff --git a/opencore_legacy_patcher/wx_gui/gui_support.py b/opencore_legacy_patcher/wx_gui/gui_support.py
index 2cac53fa3..5882833d3 100644
--- a/opencore_legacy_patcher/wx_gui/gui_support.py
+++ b/opencore_legacy_patcher/wx_gui/gui_support.py
@@ -263,6 +263,19 @@ class ThreadHandler(logging.Handler):
         wx.CallAfter(self.text_box.AppendText, self.format(record) + '\n')
 
 
+def wait_for_thread(thread: threading.Thread, sleep_interval=None):
+    """
+    Waits for a thread to finish while processing UI events at regular intervals
+    to prevent UI freezing and excessive CPU usage.
+    """
+    # Use the passed sleep_interval, or get from global_constants
+    interval = sleep_interval if sleep_interval is not None else constants.Constants().thread_sleep_interval
+
+    while thread.is_alive():
+        wx.Yield()
+        time.sleep(interval)
+
+
 class RestartHost:
     """
     Restarts the host machine
diff --git a/opencore_legacy_patcher/wx_gui/gui_sys_patch_display.py b/opencore_legacy_patcher/wx_gui/gui_sys_patch_display.py
index 747e5f60b..082f21ec8 100644
--- a/opencore_legacy_patcher/wx_gui/gui_sys_patch_display.py
+++ b/opencore_legacy_patcher/wx_gui/gui_sys_patch_display.py
@@ -93,9 +93,7 @@ class SysPatchDisplayFrame(wx.Frame):
 
         frame.ShowWindowModal()
 
-        while thread.is_alive():
-            wx.Yield()
-
+        gui_support.wait_for_thread(thread)
 
         frame.Close()
 
diff --git a/opencore_legacy_patcher/wx_gui/gui_sys_patch_start.py b/opencore_legacy_patcher/wx_gui/gui_sys_patch_start.py
index 75d1695ea..7f0a71c74 100644
--- a/opencore_legacy_patcher/wx_gui/gui_sys_patch_start.py
+++ b/opencore_legacy_patcher/wx_gui/gui_sys_patch_start.py
@@ -88,8 +88,7 @@ class SysPatchStartFrame(wx.Frame):
         kdk_thread = threading.Thread(target=_kdk_thread_spawn)
         kdk_thread.start()
 
-        while kdk_thread.is_alive():
-            wx.Yield()
+        gui_support.wait_for_thread(kdk_thread)
 
         if self.kdk_obj.success is False:
             progress_bar_animation.stop_pulse()
@@ -170,8 +169,7 @@ class SysPatchStartFrame(wx.Frame):
         metallib_thread = threading.Thread(target=_metallib_thread_spawn)
         metallib_thread.start()
 
-        while metallib_thread.is_alive():
-            wx.Yield()
+        gui_support.wait_for_thread(metallib_thread)
 
         if self.metallib_obj.success is False:
             progress_bar_animation.stop_pulse()
@@ -209,8 +207,7 @@ class SysPatchStartFrame(wx.Frame):
         install_thread = threading.Thread(target=_install_metallib)
         install_thread.start()
 
-        while install_thread.is_alive():
-            wx.Yield()
+        gui_support.wait_for_thread(install_thread)
 
         if self.result is False:
             progress_bar_animation.stop_pulse()
@@ -314,6 +311,7 @@ class SysPatchStartFrame(wx.Frame):
 
         while gui_support.PayloadMount(self.constants, self).is_unpack_finished() is False:
             wx.Yield()
+            time.sleep(self.constants.thread_sleep_interval)
 
         if self.patches[HardwarePatchsetSettings.KERNEL_DEBUG_KIT_REQUIRED] is True:
             if self._kdk_download(self) is False:
@@ -329,8 +327,7 @@ class SysPatchStartFrame(wx.Frame):
         thread = threading.Thread(target=self._start_root_patching, args=(self.patches,))
         thread.start()
 
-        while thread.is_alive():
-            wx.Yield()
+        gui_support.wait_for_thread(thread)
 
         self._post_patch()
         self.return_button.Enable()
@@ -356,8 +353,7 @@ class SysPatchStartFrame(wx.Frame):
         thread = threading.Thread(target=self._revert_root_patching, args=(self.patches,))
         thread.start()
 
-        while thread.is_alive():
-            wx.Yield()
+        gui_support.wait_for_thread(thread)
 
         self._post_patch()
         self.return_button.Enable()
diff --git a/opencore_legacy_patcher/wx_gui/gui_update.py b/opencore_legacy_patcher/wx_gui/gui_update.py
index 14a6a3841..d1902f94a 100644
--- a/opencore_legacy_patcher/wx_gui/gui_update.py
+++ b/opencore_legacy_patcher/wx_gui/gui_update.py
@@ -102,8 +102,7 @@ class UpdateFrame(wx.Frame):
 
         thread = threading.Thread(target=_fetch_update)
         thread.start()
-        while thread.is_alive():
-            wx.Yield()
+        gui_support.wait_for_thread(thread)
 
         gui_download.DownloadFrame(
             self.frame,
@@ -128,8 +127,7 @@ class UpdateFrame(wx.Frame):
         thread = threading.Thread(target=self._extract_update)
         thread.start()
 
-        while thread.is_alive():
-            wx.Yield()
+        gui_support.wait_for_thread(thread)
 
         # Title: Installing update
         title_label.SetLabel("Installing update...")
@@ -138,8 +136,7 @@ class UpdateFrame(wx.Frame):
         thread = threading.Thread(target=self._install_update)
         thread.start()
 
-        while thread.is_alive():
-            wx.Yield()
+        gui_support.wait_for_thread(thread)
 
         # Title: Update complete
         title_label.SetLabel("Update complete!")
@@ -170,8 +167,7 @@ class UpdateFrame(wx.Frame):
         thread = threading.Thread(target=self._launch_update)
         thread.start()
 
-        while thread.is_alive():
-            wx.Yield()
+        gui_support.wait_for_thread(thread)
 
         timer = 5
         while True: