Abnormally woeful waystone drop rate

I am receiving on average one (1) single waystone per map, occasionally two, occasionally none at all. When one does drop, it's always off the map boss.

I am currently at T15 waystones, though it appears to be effecting any tier of waystone I run.

I have tried placing all atlas passives into +increased waystone quantity and run waystones with high waystone drop %. I have yet to see more than 2 waystones drop in a single map.

This drop rate is absolutely not normal, and I cannot fathom what I could possibly be doing to cause it.

Does anyone have any ideas how I could be crushing my own waystone drop chance into the dirt, or is this an obscure bug I'm falling victim to?

I am facing the same problem, points in atlas in increased quantity, yesterday I tried six mod T15 with about 200+ drop chance and I got one, sometimes I got nothing at all. There is less of everything, waystones, strongboxes, currency, tablets etc...