Animated images and parallax blocked in Internet Explorer

As a matter of fact speeds up the page loading time BIG TIME! but doesnt work correctly on Internet Explorer. Parallax is blocked, and CSS animated images appear blank. Checked on 3 different computers from 3 different locations…
I understand it may be just a bug BUT lowest rating goes for being forced to open an account on developers website in order to report a bug.. i don′t have time for that and don′t feel like having to unsubscribe from a newsletter afterwards :/