diff --git a/mldaikon/instrumentor/tracer.py b/mldaikon/instrumentor/tracer.py
index 96355e1e..08278eb6 100644
--- a/mldaikon/instrumentor/tracer.py
+++ b/mldaikon/instrumentor/tracer.py
@@ -29,7 +29,7 @@
     funcs_to_be_replaced,
     is_funcs_to_be_unproxied,
 )
-from mldaikon.proxy_wrapper.proxy_basics import is_proxied, unproxy_func
+from mldaikon.proxy_wrapper.proxy_basics import is_proxied
 from mldaikon.proxy_wrapper.proxy_config import enable_C_level_observer
 from mldaikon.proxy_wrapper.proxy_registry import get_global_registry
 from mldaikon.utils import get_timestamp_ns, get_unique_id, typename
@@ -261,15 +261,16 @@ def find_proxy_in_args(args):
                 add_observer_to_func,  # import here to avoid circular import
             )
 
-            original_function = add_observer_to_func(original_function, unproxy=True)
+            original_function = add_observer_to_func(original_function, unproxy=False)
         elif is_funcs_to_be_unproxied(original_function):
-            original_function = unproxy_func(
-                original_function, inspect_torch_module=True
-            )
+            # original_function = unproxy_func(
+            #     original_function, inspect_torch_module=True
+            # )
+            pass
         elif is_builtin:
             # proxy objects being passed to backend will cause seg fault: TODO: replace with unproxy func
-            original_function = unproxy_func(original_function)
-
+            # original_function = unproxy_func(original_function)
+            pass
     try:
         if COLLECT_OVERHEAD_METRICS:
             ORIG_ENTER_PERF_TIME = time.perf_counter()
@@ -407,8 +408,8 @@ def core_wrapper(original_function, is_builtin, handle_proxy, *args, **kwargs):
     if DISABLE_WRAPPER:
         return original_function(*args, **kwargs)
 
-    if handle_proxy and is_builtin:
-        original_function = unproxy_func(original_function)
+    # if handle_proxy and is_builtin:
+    #     original_function = unproxy_func(original_function)
     return original_function(*args, **kwargs)