There is absolutely no way CG didn't change the formula for drops for this event. the previous chase events were 4% chance per energy spent. so 80% on a 20 energy hard node. that is currently false for this event. CG needs to compensate here for false advertising, making a stealth change, or just having a big oops moment and forgetting to plug in the chase formula for these shards.
In all previous chase events, i could get 5 and a half stars in the 5 days, using 6 energy refreshes (450 crystals a day) and preloading 6 refreshes before midnight on the first day. but doing that this time has earned me squat.
Edit: i think cg has plugged in the GL ticket formula instead of the chase formula.