Can I ask what hardware you’re using? I’ve heard similar things on the internet generally, but I’m on a several-years-old phone and it took under a second. Is the interstitial really that slow on some setups?
I do a lot of random browsing on an old iPad. Which doesn't have fans, I know, that was short for "it got really hot".
I'm not sure what generation it is, but I bought it around a decade ago I think.
Old browsers without crypto support would fall back to pure js sha256 implementation, which I imagine would be slow on an old iPad.