Background image flashes

hello,
my background image started to flash suddenly !!!
i know i must did smthing but i cant find what i did…
i also tried to go back 2-3 revisions but nothing change
here is the link http://loukrezis.gr/wp

thanks in advance
George

Hello George,

You can try to temporarily deactivate all your plugins except Sydney Toolbox and Page Builder by SiteOrigin, and see if it helps.

Kind Regards, Roman.