Maybe %45 would be enough since %55 part kinda make an amulet equal to a complete set. But %30 is definitely make those conduits useless.
Been tinkering in GT with some more conduits and there’s one thing I noticed way more than I wouldve liked…
Lots of them lack decend support and one thing that would kind of help would be to use the Shattered Realm Set… or so I thought.
I got reminded multiple times that the Shattered Ward is an amulet and not a medal.
My suggestion:
Please consider moving Shattered Ward to the Medal slot to help the conduits. 
30% is useless as resistant mobs are still immune. 45% is like the sets on Unstoppable mutator so meh af but not completely useless in theory.
Capping OFF is still an issue so it’s not like every fire build can pop a conduit and get that 120 rr. But some probably could…
I don’t think Aether OFF would ever be viable. It’s a fire skill thru and thru. No reason to use it but that 120 rr. Damage is negligible except trash clearing.
However, viable OFF conduit might cause issues with phys. -60% phys rr from Absolute Zero lingers after the freeze no matter how long the freeze was (if I read it correctly). So if the conduit makes resistant enemies even a little bit vulnerable, OFF could be like a stackable War Cry 2.0.
…then reduce phys RR to 20% or so at rank 12, if it’ll be so nasty. Absolute Zero is probably the most useless skill in the game anyway, so no harm in making it viable at least for a coupla builds.