If u have 1k AR and can't figure out why u can't stand at fire/arcane, plz check your armor, u need to have at least 6.5k(buffed) armor(70% damage reduction) then u are good to go.
I just figured out this not too long ago when I tried to upgrade my pant. My pant has 788 armor, but quite low AR and vit, ended up I bought a pant which's 60 AR and 180 vit but it only has 332 armor, str doesn't matter as both pants have the same str.
So I thought this's a good upgrade for my build, tried act 3 and for some reason I no longer can stand at those fire/arcane/ affixes, even with normal hit I also felt the pain, have to run around a lot(sprint) instead of WW. I switched the pant to the 788 armor pant, then I can stand at anything that throw at me again.
I've about 45k HP, 880 AR(buffed) and 6.7k armor, if I use my newly bought pant my AR will go beyond 900 AR but only have about 6k armor. For me AR is kinda overrated, not saying it's useless, but once u reach certain point of AR, it can't help your defense if your armor is low.
no useless here U really awesome really good try.....