PHP timing out on checkout

[jusasiiv]

On at least one case, when going through checkout to /controllers/front/validation.php the PrestaShop minifier script will time out PHP Fatal error: Maximum execution time of 30 seconds exceeded in /home/user/public_html/prestashop/vendor/matthiasmullie/minify/src/Minify.php

Temporary solution was to add set_time_limit(300); to the /vendor/matthiasmullie/minify/src/Minify.php file.

Needs to be investigated what causes the issue and provide a solution.