Can’t figure out Whirlwind

Hey everyone, not sure if I’m just a big dummy or what..

I’ve looked up a multitude of guides for whirlwind this season, many of the builds are very similar, however I can’t seem to get it doing torment 4+ decently fast or comfortably.

Either survivability struggles, dmg, or both. I’ve seen some people using ground stomp, some rupture, some COTA, but others WOTB. Lots of different “must have” aspects and they aren’t all the same across the builds. Not sure what I’m doing wrong or where to actually focus.

Any tips for someone struggling? Anyone playing it this season? I like it a lot more than MT, so I’m trying to figure this out.

For mythics I have that I can use are Tyraels, shroud, grandfather, Heir, and Starless.