My interaction images disappear when I return back to home page from another page within the website

The interactions ive place in my home page under projects with the spoon and the phone keep disappearing when I return back to the home page from other pages. I have to refresh a few times before it shows up again. On top of that the scroll is very choppy in those sections. The image is two images placed on top of each other. The color background is set and relative and the moving image above it is set to absolute with a high z index. I’ve tried changing the z index but the problem still persists. This is especially common with a phone image that won’t even load back after many refreshes. The phone image is smaller size than the spoon image, about 40kb less. Both are small sized images optimized for web.

please help!

here is my site