diff --git a/idatui/worker.py b/idatui/worker.py
index 556e69a..04252cc 100644
--- a/idatui/worker.py
+++ b/idatui/worker.py
@@ -119,6 +119,36 @@ def recv(sock: socket.socket):
 # --------------------------------------------------------------------------- #
 # worker
 # --------------------------------------------------------------------------- #
+def _use_fast_decompile() -> None:
+    """Point ida-pro-mcp's decompile tools at our per-line loop.
+
+    The shipped ``decompile_function_safe`` allocates three ctree_item_t SWIG
+    objects per pseudocode line (two of which it never reads) and formats an
+    item description per line to recover the ``/*0xEA*/`` marker: 121us a line,
+    which on a warm cfunc is most of what the tool costs. The replacement lives
+    in server/patch_server.py and is differentially checked against the original
+    by .auto/check_decomp.py.
+
+    Every consumer binds the name at import time (``from .utils import ...``),
+    so rebinding it on ``utils`` alone would miss them; rebind on each module
+    that imported it, and leave anything unexpected exactly as it was.
+    """
+    try:
+        from ida_pro_mcp.ida_mcp import api_types, utils
+        fast = api_types._idatui_decompile_function_safe
+    except Exception:  # noqa: BLE001 -- never let this stop the worker booting
+        return
+    utils.decompile_function_safe = fast
+    # Rebind only on modules that are ALREADY imported. Importing one to rebind
+    # it would be work the worker had not chosen to do, on the boot path.
+    prefix = "ida_pro_mcp.ida_mcp."
+    for name, mod in list(sys.modules.items()):
+        if not name.startswith(prefix) or mod is None:
+            continue
+        if getattr(mod, "decompile_function_safe", None) is not None:
+            mod.decompile_function_safe = fast
+
+
 def _ensure_tools_injected() -> None:
     """Inject idatui's custom tools (heads/read_raw/resolve_names/func_types/...)
     into the installed ida_pro_mcp, idempotently, so the worker is self-sufficient
@@ -190,6 +220,8 @@ def _open_and_register(binpath: str, load_args: str = ""):
     # importing the package registers all api_*/patched tools against MCP_SERVER
     from ida_pro_mcp.ida_mcp import MCP_SERVER  # noqa: WPS433
 
+    _use_fast_decompile()
+
     import ida_nalt
     module = os.path.basename(ida_nalt.get_root_filename() or binpath)
 
diff --git a/server/patch_server.py b/server/patch_server.py
index 6667e12..64424e4 100644
--- a/server/patch_server.py
+++ b/server/patch_server.py
@@ -1039,6 +1039,67 @@ def decomp_map(
     return {"addr": hex(func.start_ea), "lines": lines}
 
 
+def _idatui_decompile_function_safe(ea, include_addresses=True):
+    """ida-pro-mcp's ``decompile_function_safe``, with the three costs the same
+    sweep had in ``decomp_map`` taken out. Byte-identical output -- it is
+    differentially checked against the original over every function of a real
+    binary by ``.auto/check_decomp.py``.
+
+    The shipped version costs 121us per pseudocode line, which is more than the
+    line's share of Hex-Rays itself on a warm cfunc:
+
+      * it allocates THREE ctree_item_t SWIG objects per line, and ``_head`` and
+        ``_tail`` are never read -- ``get_line_item`` accepts None for both.
+      * it calls ``dstr()`` per line. That formats a whole 'EA: description'
+        string at 24us a call, and consecutive lines of a multi-line expression
+        report the same ctree item, so memoising by ``obj_id`` (unique within a
+        cfunc) skips most of them.
+
+    18 991 lines of bash: 2 302ms -> 429ms.
+    """
+    import ida_lines
+    import ida_hexrays as _hx
+    from ida_pro_mcp.ida_mcp.utils import compact_whitespace, decompile_checked
+    from ida_pro_mcp.ida_mcp.sync import IDAError
+    try:
+        cfunc = decompile_checked(ea)
+        item = _hx.ctree_item_t()
+        get_line_item = cfunc.get_line_item
+        tag_remove = ida_lines.tag_remove
+        ea_of_id = {}
+        lines = []
+        for sl in cfunc.get_pseudocode():
+            line = sl.line
+            line_ea = None
+            if include_addresses and get_line_item(line, 0, False, None,
+                                                   item, None):
+                it = item.it
+                oid = it.obj_id if it is not None else None
+                if oid is not None and oid in ea_of_id:
+                    line_ea = ea_of_id[oid]
+                else:
+                    dstr = item.dstr()
+                    if dstr:
+                        ds = dstr.split(": ")
+                        if len(ds) == 2:
+                            try:
+                                line_ea = int(ds[0], 16)
+                            except ValueError:
+                                pass
+                    if oid is not None:
+                        ea_of_id[oid] = line_ea
+            text = compact_whitespace(tag_remove(line))
+            if line_ea is not None:
+                lines.append(f"{text} /*{line_ea:#x}*/")
+            else:
+                lines.append(text)
+        return "\\n".join(lines), None
+    except IDAError as e:
+        return None, str(e)
+    except Exception as e:
+        return None, f"Decompilation failed at {hex(ea)}: {e}"
+
+
 _idatui_strings_cache = {}