diff --git a/vbancmd/vbancmd.py b/vbancmd/vbancmd.py
index cab6301..ef7e695 100644
--- a/vbancmd/vbancmd.py
+++ b/vbancmd/vbancmd.py
@@ -29,6 +29,7 @@ class VbanCmd(abc.ABC):
         self._channel = kwargs["channel"]
         self._delay = kwargs["delay"]
         self._sync = kwargs["sync"]
+        self._ratelimit = kwargs["ratelimit"]
         # fmt: off
         self._bps_opts = [
             0, 110, 150, 300, 600, 1200, 2400, 4800, 9600, 14400, 19200, 31250,
@@ -66,6 +67,7 @@ class VbanCmd(abc.ABC):
         self.running = True
         self._pdirty = False
         self.cache = {}
+        self.in_apply = False
 
     def __enter__(self):
         self.login()
@@ -203,6 +205,8 @@ class VbanCmd(abc.ABC):
             self.cache[f"{id_}.{param}"] = val
             if self._sync:
                 sleep(self._delay)
+            if self.in_apply:
+                sleep(self._ratelimit)
 
     def sendtext(self, cmd):
         """Sends a multiple parameter string over a network."""
@@ -237,6 +241,7 @@ class VbanCmd(abc.ABC):
 
     def apply(self, mapping: dict):
         """Sets all parameters of a di"""
+        self.in_apply = True
         for key, submapping in mapping.items():
             obj, index = key.split("-")
 
@@ -247,8 +252,8 @@ class VbanCmd(abc.ABC):
             else:
                 raise ValueError(obj)
             target.apply(submapping)
-            if not self._sync:
-                sleep(self._delay * 30)
+            sleep(self._ratelimit)
+        self.in_apply = False
 
     def apply_profile(self, name: str):
         try:
@@ -258,7 +263,7 @@ class VbanCmd(abc.ABC):
                 del profile["extends"]
                 for key in profile.keys():
                     if key in base:
-                        base[key] |= profile[key]
+                        base[key] = base[key] | profile[key]
                     else:
                         base[key] = profile[key]
                 profile = base
@@ -314,6 +319,7 @@ def _make_remote(kind: NamedTuple) -> VbanCmd:
             "channel": 0,
             "delay": 0.001,
             "sync": False,
+            "ratelimit": 0.025,
         }
         kwargs = defaultkwargs | kwargs
         VbanCmd.__init__(self, **kwargs)