Although Paid API Key is responding very slow in PandasAI. How to resolve this issue?

llm = OpenAI(api_token=OPENAI_API_KEY)

pandas_ai = PandasAI(llm)

When I tried asking a few questions on the data frame
API is taking a long time to respond which is more than 2 minutes like that although i am using the Paid API Key.

Don’t know if it’s a model problem? please let me know if you have any ideas.
from my exploration, i have understood that using davinci model may helps getting response faster. But how can we define the engine = davinci in Pandasaai .can anyone help?

Same issue i am facing, even on small dataset it takes around 30 sec to return response