diff --git a/src/pycestorieseditor/ceevents.py b/src/pycestorieseditor/ceevents.py
index 57a4718..9a1c4b9 100644
--- a/src/pycestorieseditor/ceevents.py
+++ b/src/pycestorieseditor/ceevents.py
@@ -215,7 +215,7 @@ def filter_ceevent(ceevent: Ceevent, ceeventname):
         yield name, cname
 
 
-def process_module(xmlfiles: list):
+def process_module(xmlfiles: list, cb=None):
     """Process the various xml files present in a given module
 
     Args:
@@ -227,26 +227,32 @@ def process_module(xmlfiles: list):
     xsd = get_xsdfile()
 
     # Pool(processes) uses os.cpu_count() if none value is provided
+    errcount = 0
     with multiprocessing.Pool() as pool:
-        res = pool.starmap(
-            process_file, ((xmlfile, xsd, parser) for xmlfile in xmlfiles), chunksize=4
+        chunks = 1
+        if os.cpu_count() < len(xmlfiles):
+            chunks = int(len(xmlfiles) / os.cpu_count()) + 1
+        res = pool.starmap_async(
+            process_file, ((xmlfile, xsd, parser) for xmlfile in xmlfiles), chunksize=chunks
         )
-
-    errcount = 0
-    for bucket, skills, errs in res:
-        errcount += errs
-        for ceevent in bucket:
-            if ceevent.name.value in ebucket.keys():
-                logger.warning(
-                    "Override of '%s' already present in bucket. (trigger: %s)",
-                    ceevent.name.value,
-                    ceevent.xmlfile,
-                )
-            ebucket[ceevent.name.value] = ceevent
-        for skill, eventname in skills:
-            for s in skill:
-                indexes['skills'].setdefault(s, [])
-                indexes['skills'][s].append(eventname)
+        for bucket, skills, errs in res.get():
+            errcount += errs
+            for ceevent in bucket:
+                if cb:
+                    cb()
+                if ceevent.name.value in ebucket.keys():
+                    logger.warning(
+                        "Override of '%s' already present in bucket. (trigger: %s)",
+                        ceevent.name.value,
+                        ceevent.xmlfile,
+                    )
+                ebucket[ceevent.name.value] = ceevent
+            for skill, eventname in skills:
+                if cb:
+                    cb()
+                for s in skill:
+                    indexes['skills'].setdefault(s, [])
+                    indexes['skills'][s].append(eventname)
 
     return errcount
 
diff --git a/src/pycestorieseditor/wxlaunch.py b/src/pycestorieseditor/wxlaunch.py
index f0c77f6..c77850c 100644
--- a/src/pycestorieseditor/wxlaunch.py
+++ b/src/pycestorieseditor/wxlaunch.py
@@ -260,11 +260,21 @@ def _button_validate_pressed(self, evt):
         if not get_xsdfile():
             self._show_warning("Please select a valid XSD file before validating.")
             return
+
+        dialog = wx.ProgressDialog(
+            "Validation", "Validating xml files...", maximum=100, style=wx.PD_APP_MODAL | wx.PD_AUTO_HIDE | wx.PD_ELAPSED_TIME | wx.PD_SMOOTH
+        )
+
+        def pulse():
+            wx.Yield()
+            dialog.Pulse()
+
         create_ebucket()
         init_index()
         errs = 0
         for module in self._paths.values():
-            err = process_module([str(f) for f in module.events_files])
+            dialog.Pulse("Processing module... {}".format(module.name))
+            err = process_module([str(f) for f in module.events_files], pulse)
             errs += err
         if errs > 0:
             self._show_warning(f"{errs} xml files couldn't be validated, please check the logs.")