One idea for why they were only able to reach 11Gbps is having only one Thunderbolt/USB4 controller[2], meaning the two USB4 ports split the 40Gbps PCIe lane. Throw in a full-duplex connection and you get 10Gbps in one direction.
[1] https://youtu.be/GqCwLjhb4YY?t=81 [2] Just a theory but seems like a sane assumption.
For whatever reason Firefox blocks it, tells you in the console that it blocked it, but fails to present the extra little UI in the site info dropdown that would usually expose the user override. Might be a bug with how this particular game sets up the web audio context or something.
Found a workaround throw it in an iFrame and have the frame load with a user interaction. Here is a jsFiddle link, just click "Run" after the page loads.
But still awesome seeing the game pop up instantly with no loading, prompts or whatever. Just like turning on an actual n64.
Have lots of fond memories of those early years, especially Minecon 2013.