https://www.skipcreative.co.nz/ourwork
It takes a long time to load, and even on a fast computer seems to lag a lot when hovering over the elements.
All it is, is a grid with 1MB images on each and a simple hover state. Is there anyway I can speed this up?
12 images @ 6,201 KB can be an issue for users that don’t have a fast connection. Since the images are used as background images they can’t be optimized responsively.
Oof yeah! Those images are HUGE! 
If you’re on a mac, I would resize them physically first and the I recommend an app called ImageOptim https://imageoptim.com/ You can drag your image files into it and it will reduce the file size dramatically (upt to 80% smaller) without making any noticeable difference to the image on the screen (lossless reduction) and then put them back in the same file for you (super quick too).
Tinypng.com is also a good online tool. Optimze your images and your site will speed up a lot 
Google will likely drop you a ton too as images that size are definitely not mobile friendly.
Ooooh so it’s the images and not the animation? Thanks a lot team will try this out.
Amazing, I am having this problem now. Thank you!