Update app.py

app.py

@@ -83,8 +83,8 @@ def generate(message, history):
         streamer=streamer,
         max_new_tokens=512,
         do_sample=True,
-        top_p= 0.75,
-        top_k= 60,
+        top_p= 0.5,
+        top_k= 50,
         temperature=0.2,
         num_beams=1,
         stopping_criteria=StoppingCriteriaList([stop]),