PoE Righteous Fire, Spell Totem, Cold builds

Most builds don't bother with freezing pinnacle bosses which, on top of the fairly high ailment threshold of 25m, have another 70% less damage taken mod that makes it pretty hard to freeze them. The ailment itself is still fairly useful if you can achieve it as it gives you -70% action speed (relevant thread) against monsters that 'Cannot be fully slowed' (aka most endgame bosses) but the payoff usually wasn't there because you could invest in more damage instead and just kill them faster.