Help with Curl PHP

Question

I have a requisition cURL and generally the WebService that conecto takes 8 seconds to return a JSON 600,000 lines.

The problem is when I open a tab to make this request

ex: http://localhost/system/search

If this tab is loading and I try to open another in the same domain:

http://localhost/system or http://localhost/system/search

It doesn’t open until the PHP just made the cURL.

Does anyone know if there’s a way to fix it?

My code:

    $servidor = "http://localhost:8080/ws/v1/http/servico/disponibilidade";
    $content = str_replace('{idHotel}', $input['idh'], $jsonServ);

    $ch = curl_init($servidor);

    curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "POST");
    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
    curl_setopt($ch, CURLOPT_POSTFIELDS, $content);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($ch, CURLOPT_HTTPHEADER, array(
        'Content-Type: application/json',
        'Content-Length: ' . strlen($content),
        'Accept: application/json')
    );

    $result = curl_exec($ch);

    echo $result;

I need to make sure that segá allowed to do two simultaneous searches in two or more tabs.