Hello! This is a normal time for such a project, there are a lot of heavy effects and transitions. I think-it’s not such a big suffering that would get a beautiful slideshow)

Mine is Core i7 2.8GHz 16G and Radeon Pro 560 and it took more than 5 hours to render

Is it possible to get a pre rendered file

There are no files in the project that can be rendered separately. I don’t know why your configuration has such a long miscalculation time. Checked on the laptop, there too the project is rendered about an hour. Try updating your drivers or After Effects, maybe this will help