I don't know if this is a major anomaly, but I have run 60 sims on the Cara node this week. I have gotten one shard. The odds of that are worse than winning the lottery. CG please look in to this. ...
I started farming Mando, Greef & Cara the day they became farmable. I've done 5 attempts per day since, no more, no less. The drop rate for all three is suppose to be the same. Here are my results.
Statistically speaking, looks good so far. I've had a little bit less luck with Mando, but I fully expect all three to reach 7 stars more or less at the same time.