Build Guide
This build uses Tempest Rush - Flurry to deal a surprisingly good amount of damage that i myself would not have expected.
I doubt it can really compete with other Sunwuko's builds but it allows for easy use in T13 as far as I have tested and brings a little change of pace to your average monk playstyle.
For playing this build, you basically just jump around to find enemies, then overrun them, freeze them and kill them. The flurry rune is very effective in this build as it brings elite burst to the table - every time you expend your resource you get a stack from flurry, each worth 90% weapon damage, stacking up to 100, that will be released the very moment you stop channeling.
The only real challenge in this build is to manage your Spirit Energy but the items and abilities listed here should make it a piece of cake once you get into the rythm.
As written, I only got to test it up to T13 and wasn't really expecting usage in GR70+, so there may be no 'real fix' to it.
Maybe replacing Ingeom with the Cristal Fist or equipping the two-handed weapon instead of cubing it, could do the trick. This would put a strain on your mobility, but could give you the channel time required to build up stacks by running over trash mobs.