diff --git a/src/ai_client.py b/src/ai_client.py
index 557d3b1..b64d0a5 100644
--- a/src/ai_client.py
+++ b/src/ai_client.py
@@ -2089,7 +2089,7 @@ def send(
 ) -> str:
  monitor = performance_monitor.get_monitor()
  if monitor.enabled: monitor.start_component("ai_client.send")
- _append_comms("OUT", "request", {"prompt": user_message, "system": _get_combined_system_prompt()})
+ _append_comms("OUT", "request", {"message": user_message, "system": _get_combined_system_prompt()})
  with _send_lock:
   if _provider == "gemini":
    res = _send_gemini(
diff --git a/src/app_controller.py b/src/app_controller.py
index 74ea325..141d3cf 100644
--- a/src/app_controller.py
+++ b/src/app_controller.py
@@ -159,7 +159,6 @@ class AppController:
    "output_tokens": 0,
    "cache_read_input_tokens": 0,
    "cache_creation_input_tokens": 0,
-   "total_tokens": 0,
    "last_latency": 0.0
   }
   self.mma_tier_usage: Dict[str, Dict[str, Any]] = {
@@ -327,20 +326,8 @@ class AppController:
     '_inject_preview': '_inject_preview',
     '_show_inject_modal': '_show_inject_modal'
    })
-  self.perf_monitor = performance_monitor.get_monitor()
-  self._perf_profiling_enabled = False
   self._init_actions()
 
- @property
- def perf_profiling_enabled(self) -> bool:
-  return self._perf_profiling_enabled
-
- @perf_profiling_enabled.setter
- def perf_profiling_enabled(self, value: bool) -> None:
-  self._perf_profiling_enabled = value
-  if hasattr(self, 'perf_monitor'):
-   self.perf_monitor.enabled = value
-
  def _update_inject_preview(self) -> None:
   """Updates the preview content based on the selected file and injection mode."""
   if not self._inject_file_path:
@@ -428,9 +415,7 @@ class AppController:
     })
 
  def _process_pending_gui_tasks(self) -> None:
-  if getattr(self, 'perf_profiling_enabled', False): self.perf_monitor.start_component("controller._process_pending_gui_tasks")
   if not self._pending_gui_tasks:
-   if getattr(self, 'perf_profiling_enabled', False): self.perf_monitor.end_component("controller._process_pending_gui_tasks")
    return
   sys.stderr.write(f"[DEBUG] _process_pending_gui_tasks: processing {len(self._pending_gui_tasks)} tasks\n")
   sys.stderr.flush()
@@ -440,6 +425,11 @@ class AppController:
   for task in tasks:
    try:
     action = task.get("action")
+    sys.stderr.write(f"[DEBUG] Processing GUI task: action={action}\n")
+    sys.stderr.flush()
+    if action:
+     session_logger.log_api_hook("PROCESS_TASK", action, str(task))
+     # ...
     if action == "refresh_api_metrics":
      self._refresh_api_metrics(task.get("payload", {}), md_content=self.last_md or None)
     elif action == "set_ai_status":
@@ -942,11 +932,9 @@ class AppController:
 
   while True:
    event_name, payload = self.event_queue.get()
-   if getattr(self, 'perf_profiling_enabled', False): self.perf_monitor.start_component("controller._process_event")
    sys.stderr.write(f"[DEBUG] _process_event_queue got event: {event_name} with payload: {str(payload)[:100]}\n")
    sys.stderr.flush()
    if event_name == "shutdown":
-    if getattr(self, 'perf_profiling_enabled', False): self.perf_monitor.end_component("controller._process_event")
     break
    if event_name == "user_request":
     threading.Thread(target=self._handle_request_event, args=(payload,), daemon=True).start()
@@ -992,7 +980,6 @@ class AppController:
        "action": "ticket_completed",
        "payload": payload
       })
-   if getattr(self, 'perf_profiling_enabled', False): self.perf_monitor.end_component("controller._process_event")
 
  def _handle_request_event(self, event: events.UserRequestEvent) -> None:
   """Processes a UserRequestEvent by calling the AI client."""
@@ -1101,8 +1088,8 @@ class AppController:
 
  def _on_api_event(self, event_name: str = "generic_event", **kwargs: Any) -> None:
   payload = kwargs.get("payload", {})
-  # Push to background event queue for processing, NOT GUI queue
-  self.event_queue.put("refresh_api_metrics", payload)
+  with self._pending_gui_tasks_lock:
+   self._pending_gui_tasks.append({"action": "refresh_api_metrics", "payload": payload})
   if self.test_hooks_enabled:
    with self._api_event_queue_lock:
     self._api_event_queue.append({"type": event_name, "payload": payload})
@@ -1849,6 +1836,7 @@ class AppController:
   self._update_cached_stats()
 
  def _update_cached_stats(self) -> None:
+  import ai_client
   self._cached_cache_stats = ai_client.get_gemini_cache_stats()
   self._cached_tool_stats = dict(self._tool_stats)
 
diff --git a/src/gui_2.py b/src/gui_2.py
index 153b0ec..8ff7b95 100644
--- a/src/gui_2.py
+++ b/src/gui_2.py
@@ -202,9 +202,9 @@ class App:
    return
 
   if len(content) > COMMS_CLAMP_CHARS:
-   # Use a fixed-height multi-line input box for large text to avoid expensive frame-by-frame wrapping
+   # Use a fixed-height child window with unformatted text for large text to avoid expensive frame-by-frame wrapping or input_text_multiline overhead
    imgui.begin_child(f"heavy_text_child_{label}_{hash(content)}", imgui.ImVec2(0, 80), True)
-   imgui.input_text_multiline(f"##{label}_input", content, imgui.ImVec2(-1, -1), imgui.InputTextFlags_.read_only)
+   imgui.text_unformatted(content)
    imgui.end_child()
   else:
    if self.ui_word_wrap:
@@ -1817,6 +1817,8 @@ class App:
     # Optimized content rendering using _render_heavy_text logic
     if kind == "request":
      self._render_heavy_text("message", payload.get("message", ""))
+     if payload.get("system"):
+      self._render_heavy_text("system", payload.get("system", ""))
     elif kind == "response":
      r = payload.get("round", 0)
      sr = payload.get("stop_reason", "STOP")