Update: There isn't a good number of consecutive days where that address staked a full day to try to figure out a longer sample. It does appear to be staking at more than 10% from the best days available to check.
It would have changed after the fork if it's a PC?
So we have been told. Not sure what the deal is with this address, or to whom it may belong. Lately the number of PC addresses being bandied about is 50, but it used to be 51. Is this the other one? Was this one left out of the boost to 100% and left @ 10%?
Edit to add:
Update: There isn't a good number of consecutive days where that address staked a full day to try to figure out a longer sample. It does appear to be staking at more than 10% from the best days available to check.
If it averages ~5% over 10 days then it's probably ok. It may have higher payouts on some days if it's been offline for a while.
This might be the case. The thing is, I don't see any specific jump, a "catchup" stake, after when it skips a period of staking and then restarts. Not exactly sure how that works though.