WordPress Custom meta_query

I have got a problem using meta_query.
For some reasons WordPress makes my machine crash when dealing with more than 8 meta_query.

To make things clear, this is my meta_query variable :

Array
(
    [relation] => AND
    [0] => Array
        (
            [key] => price
            [value] => Array
                (
                    [0] => 0
                    [1] => 899
                )

            [type] => numeric
            [compare] => BETWEEN
        )

    [1] => Array
        (
            [key] => laptops_brand
            [value] => Array
                (
                    [0] => Acer
                    [1] => Dell
                )

            [compare] => IN
        )

    [2] => Array
        (
            [key] => laptops_model
            [value] =>
            [compare] => IN
        )

    [3] => Array
        (
            [key] => laptops_screen_size
            [value] => Array
                (
                    [0] => 0
                    [1] => 14
                )

            [type] => numeric
            [compare] => BETWEEN
        )

    [4] => Array
        (
            [key] => laptops_max_screen_resolution
            [value] => Array
                (
                    [0] => 1366 x 768
                )

            [compare] => IN
        )

    [5] => Array
        (
            [key] => laptops_processor
            [value] => Array
                (
                    [0] => AMD C60
                    [1] => Intel Core i5
                )

            [compare] => IN
        )

    [6] => Array
        (
            [key] => laptops_ram
            [value] => Array
                (
                    [0] => 0
                    [1] => 4
                )

            [type] => numeric
            [compare] => BETWEEN
        )

    [7] => Array
        (
            [key] => laptops_hard_drive
            [value] => Array
                (
                    [0] => 0
                    [1] => 500
                )

            [type] => numeric
            [compare] => BETWEEN
        )

    [8] => Array
        (
            [key] => laptops_graphic_coprosesor
            [value] => Array
                (
                    [0] => ATI RADEON HD 4300
                    [1] => Intel Core i3
                )

            [compare] => IN
        )

    [9] => Array
        (
            [key] => laptops_graphic_card_ram_size
            [value] => Array
                (
                    [0] => 0
                    [1] => 512
                )

            [type] => numeric
            [compare] => BETWEEN
        )

    [10] => Array
        (
            [key] => laptops_reported_battery_live
            [value] => Array
                (
                    [0] => 0
                    [1] => 4
                )

            [type] => numeric
            [compare] => BETWEEN
        )

)

When using above arrays, the wordpress crash which leads to crash my PC and I need to hard reset my PC.

But when I put this array

Array
(
    [relation] => AND
    [0] => Array
        (
            [key] => price
            [value] => Array
                (
                    [0] => 0
                    [1] => 899
                )

            [type] => numeric
            [compare] => BETWEEN
        )

    [1] => Array
        (
            [key] => laptops_brand
            [value] => Array
                (
                    [0] => Acer
                    [1] => Dell
                )

            [compare] => IN
        )

    [2] => Array
        (
            [key] => laptops_screen_size
            [value] => Array
                (
                    [0] => 0
                    [1] => 14
                )

            [type] => numeric
            [compare] => BETWEEN
        )

    [3] => Array
        (
            [key] => laptops_processor
            [value] => Array
                (
                    [0] => AMD C60
                    [1] => Intel Core i5
                )

            [compare] => IN
        )

    [4] => Array
        (
            [key] => laptops_ram
            [value] => Array
                (
                    [0] => 0
                    [1] => 4
                )

            [type] => numeric
            [compare] => BETWEEN
        )

    [5] => Array
        (
            [key] => laptops_hard_drive
            [value] => Array
                (
                    [0] => 0
                    [1] => 500
                )

            [type] => numeric
            [compare] => BETWEEN
        )

    [6] => Array
        (
            [key] => laptops_graphic_coprosesor
            [value] => Array
                (
                    [0] => ATI RADEON HD 4300
                    [1] => Intel Core i3
                )

            [compare] => IN
        )

    [7] => Array
        (
            [key] => laptops_reported_battery_live
            [value] => Array
                (
                    [0] => 0
                    [1] => 4
                )

            [type] => numeric
            [compare] => BETWEEN
        )

)

It works flawlessly.

Here is the WP_Query Variable

$q = new WP_Query(
	array(
		"post_type" => $_GET['type'],
		"posts_per_page" => 10,
		"paged" => $_GET["paged"],
		"meta_query" => $meta,
	)
);

Any idea what caused this ?

Thanks

I am open to any idea to achieve the same results, even if it has to deal with mySQL Query using global $wpdb.

[ mod note – follow-up post pasted in above & deleted along with subsequent bump to get topic onto the no-replies list ]