Update app.py

app.py

@@ -29,7 +29,7 @@ def predict(message, history):
     generation_config = GenerationConfig(
       penalty_alpha=0.6,
       early_stopping=True, 
-      num_beams=4,
+      num_beams=2,
       do_sample=True,
       top_k=5,
       temperature=0.5,