Some memory issue on FPD 4.0.2

Hello,

yesterday I updated FPD to 4.0.2 and there is some memory issue, I think. Just after the update I cuoldn't load any product. The loading process just freezed. I clear the browser cache and it started to working. Today I did some tests and still something is worng. I can change the product only 2 or 3 times. Next attempt causes browser to freeze and showing error message - out of memory in Opera, loading page error in chrome. Egde automatically refresh the site. You can see: https://tshirt-gallery.pl/produkt/prezent-na-dzien-matki-wg-twojego-pomyslu/

Wordpress: 4.9.9

Woocommerce: 3.5.3

Any advice?