diff --git a/src/django_bpp/playwright_util.py b/src/django_bpp/playwright_util.py
index 274dc5373..16a2389ff 100644
--- a/src/django_bpp/playwright_util.py
+++ b/src/django_bpp/playwright_util.py
@@ -88,7 +88,7 @@ def select_select2_autocomplete(
 
     # Type the search term using pressSequentially to trigger AJAX search
     search_input = page.locator(".select2-search__field")
-    search_input.press_sequentially(value, delay=50)
+    search_input.press_sequentially(value)
 
     # Wait for AJAX search to complete by checking for loading indicators to disappear
     # Polish text "Trwa wyszukiwanie…" or "Trwa ładowanie…" indicates loading
@@ -130,11 +130,11 @@ def select_select2_autocomplete(
             timeout=timeout,
         )
     else:
-        # No event-driven signal available — small polishing wait so the
-        # next interaction starts after Select2's internal change handlers
-        # finish (jQuery 'change' listeners run synchronously, but custom
-        # widgets may queue setTimeout(0) callbacks).
-        page.wait_for_timeout(50)
+        # No event-driven signal available — wait for next event loop tick
+        # so Select2's internal change handlers finish (jQuery 'change'
+        # listeners run synchronously, but custom widgets may queue
+        # setTimeout(0) callbacks).
+        page.wait_for_timeout(0)
 
 
 def close_all_select2_dropdowns(page: Page):
@@ -150,7 +150,7 @@ def close_all_select2_dropdowns(page: Page):
         }
     }"""
     )
-    page.wait_for_timeout(100)
+    page.wait_for_timeout(0)
 
 
 def proper_click_element(page: Page, selector: str):
diff --git a/src/pbn_integrator/core/__init__.py b/src/pbn_integrator/core/__init__.py
deleted file mode 100644
index e1aeb79bd..000000000
--- a/src/pbn_integrator/core/__init__.py
+++ /dev/null
@@ -1,148 +0,0 @@
-"""Core PBN integrator functions"""
-
-import time
-
-
-def matchuj_uczelnie(uczelnia):
-    """Match university with PBN"""
-    # This would normally call the actual API
-    # For now, we'll simulate it
-
-    # Check if we have PBN UID already
-    if uczelnia.pbn_uid_id:
-        return {"matched": True, "uid": uczelnia.pbn_uid_id}
-
-    # Try to match by name/REGON
-    # In real implementation, this would call PBN API
-    time.sleep(1)  # Simulate API call
-
-    # For demo, let's just return success
-    return {"matched": True, "uid": "demo-uid"}
-
-
-def importuj_initial(
-    uczelnia=None, wydzial_domyslny=None, delete_existing=False, progress_callback=None
-):
-    """Import initial configuration"""
-    if progress_callback:
-        progress_callback(0)
-
-    # Simulate some work
-    for i in range(0, 101, 20):
-        time.sleep(0.5)
-        if progress_callback:
-            progress_callback(i)
-
-    return {"imported": 5, "failed": 0}
-
-
-def importuj_zrodla(
-    uczelnia=None, wydzial_domyslny=None, delete_existing=False, progress_callback=None
-):
-    """Import journals"""
-    if progress_callback:
-        progress_callback(0)
-
-    # Simulate fetching and importing journals
-    for i in range(0, 101, 10):
-        time.sleep(0.3)
-        if progress_callback:
-            progress_callback(i)
-
-    return {"imported": 150, "failed": 2}
-
-
-def importuj_wydawcy(
-    uczelnia=None, wydzial_domyslny=None, delete_existing=False, progress_callback=None
-):
-    """Import publishers"""
-    if progress_callback:
-        progress_callback(0)
-
-    # Simulate work
-    for i in range(0, 101, 25):
-        time.sleep(0.2)
-        if progress_callback:
-            progress_callback(i)
-
-    return {"imported": 45, "failed": 0}
-
-
-def importuj_konferencje(
-    uczelnia=None, wydzial_domyslny=None, delete_existing=False, progress_callback=None
-):
-    """Import conferences"""
-    if progress_callback:
-        progress_callback(0)
-
-    # Simulate work
-    for i in range(0, 101, 20):
-        time.sleep(0.15)
-        if progress_callback:
-            progress_callback(i)
-
-    return {"imported": 78, "failed": 1}
-
-
-def importuj_autorzy(
-    uczelnia=None, wydzial_domyslny=None, delete_existing=False, progress_callback=None
-):
-    """Import authors"""
-    if progress_callback:
-        progress_callback(0)
-
-    # Simulate importing authors - this would be slower
-    for i in range(0, 101, 5):
-        time.sleep(0.2)
-        if progress_callback:
-            progress_callback(i)
-
-    return {"imported": 234, "failed": 5}
-
-
-def importuj_publikacje(
-    uczelnia=None, wydzial_domyslny=None, delete_existing=False, progress_callback=None
-):
-    """Import publications"""
-    if progress_callback:
-        progress_callback(0)
-
-    # This is usually the longest step
-    for i in range(0, 101, 2):
-        time.sleep(0.1)
-        if progress_callback:
-            progress_callback(i)
-
-    return {"imported": 1523, "failed": 12}
-
-
-def importuj_oswiadczenia(
-    uczelnia=None, wydzial_domyslny=None, delete_existing=False, progress_callback=None
-):
-    """Import statements"""
-    if progress_callback:
-        progress_callback(0)
-
-    # Simulate work
-    for i in range(0, 101, 10):
-        time.sleep(0.1)
-        if progress_callback:
-            progress_callback(i)
-
-    return {"imported": 567, "failed": 3}
-
-
-def importuj_oplaty(
-    uczelnia=None, wydzial_domyslny=None, delete_existing=False, progress_callback=None
-):
-    """Import fees"""
-    if progress_callback:
-        progress_callback(0)
-
-    # Simulate work
-    for i in range(0, 101, 20):
-        time.sleep(0.1)
-        if progress_callback:
-            progress_callback(i)
-
-    return {"imported": 89, "failed": 0}