Interactive 3D website design without the heavy download
Many 3D portfolios load a large graphics engine before showing anything, which is slow on a phone. These designs use the browser's own 3D transforms instead, so your text still arrives first as ordinary HTML that search engines and screen readers can read.
Anyone who has asked their device to reduce motion sees the finished page with no movement at all, and nothing is lost.
Who a 3D portfolio suits
It suits people whose work is creative or technical: designers, animators, front end developers. It says you care about craft. For a bank or a hospital, a calmer design will usually serve you better, and you can switch at any time.