hmmz then you might want to read gel87's post here:
https://forums.d2jsp.org/topic.php?t=101176500&f=87 it might help you calculating what you seek
but what I get from gel87's explanation is that it's basically pointless to try counter that kind of slow % (from Holy Freeze or Clegaw's gloves) as it requires a high amount of ias, so high that you'd sacrifice too much really. Worth calculating if you have time to dig into it though.
also note that both Holy Freeze and Clegaw's are considered BM (for a reason...) so perhaps a smiter isn't the best pick if you're sure you're gonna be facing a BM 'tard using HF and/or clegs...