concurrency_count increase to 6

app.py

@@ -259,5 +259,5 @@ with gr.Blocks(analytics_enabled=False) as demo:
                         cache_examples=False,)
             tts_button.click(predict, [input_text_gr, style_gr, ref_gr, tos_gr], outputs=[out_text_gr, audio_gr, ref_audio_gr])
 
-demo.queue()  
+demo.queue(concurrency_count=6)  
 demo.launch(debug=True, show_api=True)