Hello,

1) Try to reduce the number of plugins and sizes of images you use. So we suggest you remove unnecessary plugins, install some kind of JS & CSS optimizing plugins like Better WordPress Minify and a caching plugin like WP Super Cache. Also, you can use the GTmetrix tool to see what makes your website slow and optimize these parts of your website.

2) I have visited your website and there is no issue on MAC safari. I have checked on lambda (cross browser testing service). Please clear cache and check back.

Regards.
Xtemos Studios