There's no new code on my part since I pushed it live. Yesterday I noticed an error on the stats page where the button wraps below the select and it shouldn't, so I was planning to fix that, but I won't be doing anything until the holidays.

The animation in the header is done with CSS, so it's not like I'm running any scripts that would gobble up memory, but the Google Ads are probably running some kind of script and I notice that the adverts aren't showing on Windows Firefox.

Doesn't crash the browser for me on either Windows or an iMac, so it's weird that it's happening to you.