Continuing the discussion from Grim Dawn v1.2.1.6 Playtest Changelog:
*fully aware i don’t know what the intended outcome is, and playing devil’s advocate not knowing what the desired middleground solution from complaints is
but
i did a couple of runs checking Kuba spawn on Normal
i spawned him in 5 mins in East Marsh (mutator layer x1?), on a relatively low density spawn round, through Galeslice, Baelgor KalisKa,+1 totem and the outside of Temple of the Three.
Spawned him him in 7mins on a regular quest clear through Pine Barrens, Mogara, BloodBriar, Ungoliax, totem, appeared right outside the gateway of the Fortress
third run i did an ugdenbog check, 0 mutator/challenge multiplier same as Pine Barren i Assume?
this time i made it almost all the way to Barrowholm from Gloomwald south portal before spawning Kuba, where the Coven guards/sisters are in the cage, almost 18 minutes, doing 2 Avris cellars and Packla+Carraxus+Bargoll. (skipped Sylvarrira/Ancient grove mutator influencers)
so what does all this mean, idono, depends on the intend
If this is a change based on recent complaints, my guess would be the spawner will still be potentially too low for their comfort. Basing this off how quick Kuba still managed to spawn in two of the runs, which might have been decent rng from the lower end of the slider spectrum?
While what they want might be either what happened in the 3rd run/how long it took to spawn in my Ugden run, (if not potentially even slower/“not at all” still 
)
i have no steak in this horse and its dog race, like i said devil’s advocate speculation reacting to the change