RAK 473 response time

I have a question about the RAK473.

I use the RAK473 through the way of query.

when I open a tcp client socket, and there is no data (= 0)

When i request the data with “at + read = 0,1000 \ r \ n” the response time is sky high> 500ms

Can this response time be reduced?

Greetings Will

Is there someone who can help me?

HI will
which version of firmware is it? I need to reproduce issue ,

I use version;

RAK 473

and? have you been able to reproduce it?