Time's I've attempted this:

Thursday evening, around 6p eastern
Friday evening, around 6p eastern
Saturday, around 10a and 6p eastern
Sunday, around 6p eastern
Monday, around 8a eastern

Roulettes with 4m options (Expert, Mentor, Lv50-80, Leveling, 90) pop fine.

Roulettes with more than 4m (Trials, Normal Raids, Alliance Raids) do not...at any of the above times, on Primal, or Aether, or Crystal, or Dynamis. Not as a tank, not as a healer, not as a DPS. Many of them claim "less than 5m" q, and then change after not popping (such as tank on Primal for Normal raids now, was a "less than 5m" q that's currently 16mins in...)

This game never had this problem before, why now?