You're spot on - dmesg shows it's OOMing, and pretty fast too. Turns out that it happens even if I just open the web page, yet alone start trying to remove the

You're spot on - dmesg shows it's OOMing, and pretty fast too. Turns out that it happens even if I just open the web page, yet alone start trying to remove the background of an image, so I'd guess it's something to do with loading whatever model is being used.