PD executes SQL sitewide. How to limit that to certain pages?

v1.5.2
The following SQL queries are executed each time a page is loaded on the site. No matter if the page has anything to do with PD or not.

SELECT v.*, g.order FROM wordpress_participants_database_fields v INNER JOIN wordpress_participants_database_groups g ON v.group = g.name  ORDER BY
g.order, v.order;
0.0839 [ms]
SELECT v.*, g.order FROM wordpress_participants_database_fields v INNER JOIN wordpress_participants_database_groups g ON v.group = g.name AND
v.form_element IN ("text-line","hidden") ORDER BY g.order, v.order;
0.0770 [ms]
SELECT v.*, g.order FROM wordpress_participants_database_fields v INNER JOIN wordpress_participants_database_groups g ON v.group = g.name AND
v.form_element IN ("text-line","hidden") ORDER BY g.order, v.order;
0.0780 [ms]
SELECT v.*, g.order FROM wordpress_participants_database_fields v INNER JOIN wordpress_participants_database_groups g ON v.group = g.name AND
v.form_element IN ("text-line","hidden") ORDER BY g.order, v.order;
0.0911 [ms]
SELECT v.*, g.order FROM wordpress_participants_database_fields v INNER JOIN wordpress_participants_database_groups g ON v.group = g.name  ORDER BY
g.order, v.order;
0.0808 [ms]
SELECT v.*, g.order FROM wordpress_participants_database_fields v INNER JOIN wordpress_participants_database_groups g ON v.group = g.name WHERE
v.sortable = 1  ORDER BY g.order, v.order;
0.0751 [ms]
SELECT v.*, g.order FROM wordpress_participants_database_fields v INNER JOIN wordpress_participants_database_groups g ON v.group = g.name WHERE
v.sortable = 1  ORDER BY g.order, v.order;
0.0720 [ms]
SELECT v.*, g.order FROM wordpress_participants_database_fields v INNER JOIN wordpress_participants_database_groups g ON v.group = g.name AND
v.form_element IN ("text-line","hidden") ORDER BY g.order, v.order;

Is there a way to tweak this so that the queries are executed solely in relevant pages/posts?

http://wordpress.org/plugins/participants-database/