Hi,
To all of you who are staking pivx (POS) :
Ensure you have done the mandatory wallet upgrade (2.2.0). Latest wallet version as of today (13 May 2017) is 2.2.1.
Click on the send tab in the pivx wallet and click on inputs to verify how your pivx tokens are distributed (single vs multiple address).
If you have a single address, you can use the Split UTXO option to create multiple of 800 (or 900 or 1000) which is ideal to gain rewards rather than keeping 2000+ coins in one address.
If you have coins under different address, please move it around by intra wallet transfers which are instantaneous and very cheap (0.00001920piv) to ensure each address has atleast 800 pivx.
This ensures highest staking rewards.
Cheers n happy staking.