Anecdote, but I've got 30 tabs open in Chrome and I'm using a Macbook Pro that's over 7 years old and it loads in less than 3 seconds.
Also, I can open it in Lynx. The un-alt'd images mean there's a bit of inaccessible content, but it's actually more or less coherent, which might be useful to those whose machines are struggling with the content or even (potentially) to those rendering opinions on whether the web just sucks.
Anecdote, IE11 "Edge"-mode still doesn't support 3D CSS transformations. It's also end of life in Win8. The presentation worked fine in Chrome and Firefox.
It only consumes a few MB RAM. But the favicon of his website is missing - that's why it looks like it loads several seconds.
Also, I can open it in Lynx. The un-alt'd images mean there's a bit of inaccessible content, but it's actually more or less coherent, which might be useful to those whose machines are struggling with the content or even (potentially) to those rendering opinions on whether the web just sucks.