WP_Query - Load delay with multiple meta_query - wordpress

Question

I have a Wordpress site that uses quite a few filters to display jobs.
The query will filter jobs by:-
The Job Type
The Location
Job Sector
If it is an International Job
Will check the salary between two values
The current query I am running is:-
<?php
$paged = ( get_query_var('paged') ) ? get_query_var('paged') : 1;
$args = array(
'posts_per_page'=> -1,
'post_type' => 'jobs',
'order' => 'DESC',
'posts_per_page' => 20,
'paged' => $paged,
's' => $search_field,
'meta_query' => array(
'relation' => 'AND',
array(
array(
'key' => 'job_type',
'value' => $job_type,
'compare' => 'LIKE',
),
array(
'key' => 'job_location',
'value' => $job_location,
'compare' => 'LIKE',
),
array(
'key' => 'job_sector',
'value' => $job_sector,
'compare' => 'LIKE',
),
array(
'key' => 'international_job',
'value' => $international_job,
'type' => 'numeric',
'compare' => 'IN',
),
array(
'key' => 'job_location',
'value' => $location_array,
'compare' => 'NOT IN',
),
),
array(
'relation' => 'OR',
array(
'relation' => 'AND',
array(
'key' => 'anual_to_salary',
'value' => array($job_salary_from,$job_salary_to),
'type' => 'numeric',
'compare' => 'BETWEEN',
),
),
array(
'relation' => 'AND',
array(
'key' => 'anual_from_salary',
'value' => array($job_salary_from,$job_salary_to),
'type' => 'numeric',
'compare' => 'BETWEEN',
),
),
array(
'relation' => 'OR',
array(
'key' => 'job_negotiable',
'value' => 'yes',
'compare' => '=',
),
),
),
)
);
$fetch_jobs = new WP_Query( $args );?>
I'm assuming this is a bad way to do this kind of query as it's taking around 5 - 10 seconds to display any results.
Can anyone recommend a better way to do this type of query with multiple filters?
Thanks in advance.

Answer 1

First of all Your code is like a charm, there is no better way to execute wp_query();. it is taking 5 to 10 second because there is lot of conditions to check and it totally depends on the data on which it have to perform filtration.
I saw whole code and just need a little change that you pass same argument twice i.e. posts_per_page please correct it. else it is the best to perform wp_query.