Facebook users_getStandardInfo is very slow. Is the FQL or CURL slow?

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So, I am running a facebook application and I have to call FQL quite frequently. e.g. calling $fbObj->api_client->users_getStandardInfo() with the old facebookapi_php5_restlib However, I found it VERY VERY VERY SLOW to get the response back. I know that call actually use CURL connect to Facebook.So, is the CURL call slow in response? or FQL? of course, how to improve it? In addition, any one how good the new facebook api is? i heard it is even worse in terms of performance...