Speed review is freezing after few words

Memrise Bug Control Web Bugs
1

constantly freezing after max 15 items.

thanks

2

Hi,

have you come across any red web console error (Firefox F12 hotkey; sorry, I have no idea how to do it in Chrome/Opera, etc.)?

A freeze quite often means that the JS system crashed in the background.

3

danke, Thomas, werde mir demnächst die Konsole angucken