meta query with lots of custom meta

Hi,
I have a WP_Query with this meta_query parameter:
[meta_query] => Array
(
[0] => Array
(
[key] => wpcf-categoria_annuncio
[value] => 1
[compare] => =
)

[1] => Array
(
[key] => wpcf-tipologia
[value] => 1
[compare] => =
)

[2] => Array
(
[key] => wpcf-nlocali
[value] => 3
[compare] => =
)

[3] => Array
(
[key] => wpcf-bagni
[value] => 1
[compare] => =
)

[4] => Array
(
[key] => wpcf-importo
[value] => Array
(
[0] => 33579
[1] => 511210
)

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

[5] => Array
(
[key] => wpcf-superficie
[value] => Array
(
[0] => 1080
[1] => 5700
)

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

[6] => Array
(
[key] => wpcf-nome_regione
[value] => Veneto
[compare] => =
)

[7] => Array
(
[key] => wpcf-sigla_provincia
[value] => TV
[compare] => =
)

[8] => Array
(
[key] => wpcf-comune_istat
[value] => 026086
[compare] => =
)

[9] => Array
(
[key] => wpcf-localita
[value] => Monigo
[compare] => =
)

[10] => Array
(
[key] => wpcf-codice-classe-energetica
[value] => 5
[compare] => =
)

[11] => Array
(
[key] => wpcf-riscaldamento_id
[value] => 2
[compare] => =
)

[12] => Array
(
[key] => wpcf-condizioni_id
[value] => 2
[compare] => =
)

[13] => Array
(
[key] => wpcf-codice_autorimessa
[value] => 1
[compare] => =
)

)

I know that Mysql crashes doing this query because of too many “join” on wp_postmeta table. Now my quetion is: is there a way to query on multiple custom post meta without blocking my DB?

Thanks