diff --git a/backend/src/config.py b/backend/src/config.py
index 1acdb38..3d0ce8a 100644
--- a/backend/src/config.py
+++ b/backend/src/config.py
@@ -90,7 +90,7 @@ def load_settings() -> BackendSettings:
         tshark_enabled=_env_bool("BACKEND_TSHARK_ENABLED", True),
         tshark_display_filter=_env_str("BACKEND_TSHARK_DISPLAY_FILTER", "http or tls or dns"),
         tshark_cache_ttl_seconds=_env_float("BACKEND_TSHARK_CACHE_TTL_SECONDS", 5.0),
-        tshark_match_window_ms=_env_int("BACKEND_TSHARK_MATCH_WINDOW_MS", 1_500),
+        tshark_match_window_ms=_env_int("BACKEND_TSHARK_MATCH_WINDOW_MS", 5_000),
         tshark_reader_join_timeout_seconds=_env_float("BACKEND_TSHARK_READER_JOIN_TIMEOUT_SECONDS", 2.0),
         tshark_process_stop_timeout_seconds=_env_float("BACKEND_TSHARK_PROCESS_STOP_TIMEOUT_SECONDS", 3.0),
     )
diff --git a/backend/src/utilities/tshark_manager.py b/backend/src/utilities/tshark_manager.py
index 899b18c..9ed582a 100644
--- a/backend/src/utilities/tshark_manager.py
+++ b/backend/src/utilities/tshark_manager.py
@@ -281,6 +281,13 @@ class TsharkManager:
         self._workers: Dict[str, Dict[str, Any]] = {}
         self._cache: Dict[Tuple[str, int, str, str, int, int, int], List[Dict[str, Any]]] = {}
         self._last_error_by_iface: Dict[str, str] = {}
+        self._stats: Dict[str, Any] = {
+            "events_total": 0,
+            "events_useful": 0,
+            "lookup_hits": 0,
+            "backfill_updates_total": 0,
+            "last_event_by_iface": {},
+        }
         self._lock = threading.Lock()
 
     @property
@@ -338,6 +345,7 @@ class TsharkManager:
             event = entries.pop(best_index)
             if not entries:
                 self._cache.pop(signature, None)
+            self._stats["lookup_hits"] += 1
 
         return _build_enrichment(event)
 
@@ -356,6 +364,7 @@ class TsharkManager:
                 },
                 "cache_entries": sum(len(entries) for entries in self._cache.values()),
                 "last_error_by_iface": dict(self._last_error_by_iface),
+                "stats": dict(self._stats),
             }
 
     def _start_worker_locked(self, iface: str) -> None:
@@ -465,10 +474,25 @@ class TsharkManager:
             with self._lock:
                 entries = self._cache.setdefault(signature, [])
                 entries.append(event)
+                self._stats["events_total"] += 1
+                self._stats["last_event_by_iface"][iface] = {
+                    "observed_at_ms": event.get("observed_at_ms"),
+                    "protocol": event.get("protocol"),
+                    "src_ip": event.get("src_ip"),
+                    "dst_ip": event.get("dst_ip"),
+                    "src_port": event.get("src_port"),
+                    "dst_port": event.get("dst_port"),
+                    "frame_protocols": event.get("frame_protocols"),
+                    "http": event.get("http"),
+                    "tls": event.get("tls"),
+                    "dns": event.get("dns"),
+                }
                 self._purge_cache_locked(now_ms=int(event["observed_at_ms"]))
 
             enrichment = _build_enrichment(event)
             if _has_useful_enrichment(enrichment):
+                with self._lock:
+                    self._stats["events_useful"] += 1
                 self._schedule_backfill(event, enrichment)
 
         rc = process.poll()
@@ -495,6 +519,8 @@ class TsharkManager:
                 window_ms=settings.tshark_match_window_ms,
             )
             if updated:
+                with self._lock:
+                    self._stats["backfill_updates_total"] += updated
                 logger.debug(
                     "Backfilled tshark metadata for %s packets on %s %s:%s -> %s:%s",
                     updated,
diff --git a/setup_build_server.sh b/setup_build_server.sh
index 96dd131..2910e73 100755
--- a/setup_build_server.sh
+++ b/setup_build_server.sh
@@ -79,7 +79,7 @@ cat >"$BACKEND_ENV_FILE" <<EOL
 BACKEND_TSHARK_ENABLED=true
 BACKEND_TSHARK_DISPLAY_FILTER=http or tls or dns
 BACKEND_TSHARK_CACHE_TTL_SECONDS=5.0
-BACKEND_TSHARK_MATCH_WINDOW_MS=1500
+BACKEND_TSHARK_MATCH_WINDOW_MS=5000
 BACKEND_TSHARK_READER_JOIN_TIMEOUT_SECONDS=2.0
 BACKEND_TSHARK_PROCESS_STOP_TIMEOUT_SECONDS=3.0
 EOL