I'm rank 1 invoker on SeasonHC atm having cleared GR78, did it at around paragon 600.
I feel like, with the right map I could probably push GR80 and I've only got 610 strength from Caldesann's Despair, also as it's HC I'm running Indestructible instead of Finery. With para ~1200 (2200 more str) all geared Despaired (5200 more str) and Finery (15%) id have nearly double the strength I have now which would likely make me GR88+ viable.
So, yes invoker can. The key is basically grouping large amounts of mobs and utilizing Akarat's Awakening. If you don't have 100% uptime on Iron Skin then your wasting your time with that fight and you need to group mobs better. Also getting lots elite packs is a huge plus, getting mobs that have fast attacks and small hit boxes (so you can get more of them around u, the little dagger wielding things from A5 rock) and then the right affixes like fire chains is awesome because it's lots of little hits meaning lots of blocks and thus reduced cooldowns.
Ultimately, like every season so far if you want to push ranks it's really just down to RNG and time input to get high paragon etc. As with any build it's quite simple to work out what it is that you need I.E. Mob type, map, pylon, how to group etc. And you just need to spam rifts until you get the right layout which is kinda lame but that's just the way it is when trying to push high.
I'm rank 1 invoker on SeasonHC atm having cleared GR78, did it at around paragon 600.
I feel like, with the right map I could probably push GR80 and I've only got 610 strength from Caldesann's Despair, also as it's HC I'm running Indestructible instead of Finery. With para ~1200 (2200 more str) all geared Despaired (5200 more str) and Finery (15%) id have nearly double the strength I have now which would likely make me GR88+ viable.
So, yes invoker can. The key is basically grouping large amounts of mobs and utilizing Akarat's Awakening. If you don't have 100% uptime on Iron Skin then your wasting your time with that fight and you need to group mobs better. Also getting lots elite packs is a huge plus, getting mobs that have fast attacks and small hit boxes (so you can get more of them around u, the little dagger wielding things from A5 rock) and then the right affixes like fire chains is awesome because it's lots of little hits meaning lots of blocks and thus reduced cooldowns.
Ultimately, like every season so far if you want to push ranks it's really just down to RNG and time input to get high paragon etc. As with any build it's quite simple to work out what it is that you need I.E. Mob type, map, pylon, how to group etc. And you just need to spam rifts until you get the right layout which is kinda lame but that's just the way it is when trying to push high.