you can also check your errors in browser as you have issue with particles.
BTW: I hope this site is meant to be focused on users with hi specs computers as this kind of blur usage eats CPU like crazy.
hi @FlowKeeper you should be familiar how blur works. It recalculate each pixel as many times as is set so even with small blur number it is a lot of calculation and on top you add animation so CPU goes crazy and it will have big impact on page overall performance.
Blur is nice but should be used with caution this mean take in consideration number of elements their size and blur amount(px) 10px blur → 1-2 elements 2px blur → 5-8 elements etc but again size of element and its type (image or color only) play huge part .