Changing annotation dot text height takes forever

I have around 7000 annotation dots which I added with rhinoscript in a few seconds.
I select them all to change the text height in the properties panel and it takes minutes and rhino hangs in not responding mode. Why? can this be optimized?

Hello - I’d try doing this in a script with redraw turned off.


yes, but why does it take so much time without a script, just by using the properties pannel?