diff --git a/jedi/api.py b/jedi/api.py
index e3a49ce1..46407999 100644
--- a/jedi/api.py
+++ b/jedi/api.py
@@ -386,11 +386,12 @@ class Script(object):
                 raise NotFoundError()
 
         debug.speed('func_call start')
-        try:
-            call, index = check_cache()
-        except NotFoundError:
-            return None
-        debug.speed('func_call parsed')
+        call = None
+        if settings.use_get_in_function_call_cache:
+            try:
+                call, index = check_cache()
+            except NotFoundError:
+                return None
 
         if call is None:
             # This is a backup, if the above is not successful.
@@ -398,6 +399,7 @@ class Script(object):
             call, index = check_user_stmt(user_stmt)
             if call is None:
                 return None
+        debug.speed('func_call parsed')
 
         debug.speed('func_call user_stmt')
         with common.scale_speed_settings(settings.scale_get_in_function_call):
diff --git a/jedi/settings.py b/jedi/settings.py
index 789ac955..736c561f 100644
--- a/jedi/settings.py
+++ b/jedi/settings.py
@@ -27,6 +27,11 @@ fast_parser = True
 # is basically useless. So don't use it.
 fast_parser_always_reparse = False
 
+# Use the cache (full cache) to generate get_in_function_call's. This may fail
+# with multiline docstrings (likely) and other complicated changes to the fail
+# (unlikely). The goal is to move away from it by making the rest faster.
+use_get_in_function_call_cache = True
+
 # ----------------
 # dynamic stuff
 # ----------------