If you have a lot of event in same page, and this make a broken survey : maybe
- Reduce events on same page and take a group by group mode
- Reduce events on same page by review the logic.

Clearly : just with this event :
Your name is {name.NOAK)

it don't break any browser, then you have another logic part inside the same page.

Denis
PS : but i think have a 'option' in LS expression manager to disable the 'onkeyup' event and set it to onblur is a good idea.

In develop version : all inline javascript was removed, then a good javascript dev can update this.
github.com/LimeSurvey/LimeSurvey/blob/de...em_javascript.js#L27
in template (for example)