How to get all strikes of Index in less than 2 sec

Hi Team,

I am trying to find a way to get all strikes of particular index (Nifty, Bank Nifty, Sensex, Fin Nifty, Bank Ex) with ltp for particular expiry in less than 2 - 5 sec.

I tried with kite.ltp way to get it done But it is taking more than 3 min to get all strikes and ltp's.

Can you please suggest the other way to get this ?
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