diff --git a/docs/environments/butterfly.md b/docs/environments/butterfly.md
index aa008be1b..4e1262c03 100644
--- a/docs/environments/butterfly.md
+++ b/docs/environments/butterfly.md
@@ -57,14 +57,14 @@ from pettingzoo.butterfly import knights_archers_zombies_v10
 env = knights_archers_zombies_v10.env(render_mode="human")
 env.reset(seed=42)
 
-clock = pygame.time.Clock()
 manual_policy = knights_archers_zombies_v10.ManualPolicy(env)
 
 for agent in env.agent_iter():
-    clock.tick(env.metadata["render_fps"])
     observation, reward, termination, truncation, info = env.last()
 
-    if agent == manual_policy.agent:
+    if termination or truncation:
+        action =  None
+    elif agent == manual_policy.agent:
         # get user input (controls are WASD and space)
         action = manual_policy(observation, agent)
     else:
diff --git a/pettingzoo/butterfly/cooperative_pong/cooperative_pong.py b/pettingzoo/butterfly/cooperative_pong/cooperative_pong.py
index b0665dc2e..44b1492a8 100644
--- a/pettingzoo/butterfly/cooperative_pong/cooperative_pong.py
+++ b/pettingzoo/butterfly/cooperative_pong/cooperative_pong.py
@@ -147,6 +147,7 @@ def __init__(
         render_mode=None,
         render_ratio=2,
         kernel_window_length=2,
+        render_fps=15,
     ):
         super().__init__()
 
@@ -211,6 +212,10 @@ def __init__(
 
         self.reinit()
 
+        self.render_fps = render_fps
+        if self.render_mode == "human":
+            self.clock = pygame.time.Clock()
+
     def reinit(self):
         self.rewards = dict(zip(self.agents, [0.0] * len(self.agents)))
         self.terminations = dict(zip(self.agents, [False] * len(self.agents)))
@@ -271,6 +276,7 @@ def render(self):
         observation = np.array(pygame.surfarray.pixels3d(self.screen))
         if self.render_mode == "human":
             pygame.display.flip()
+            self.clock.tick(self.render_fps)
         return (
             np.transpose(observation, axes=(1, 0, 2))
             if self.render_mode == "rgb_array"