Honestly, I have stopped staking my coins more than one months.
It's mainly because I used only around 300 coins for staking, which gives me very limited staking rewards per day.
Most of my blocks found are orphaned blocks.
It's likely changed dramatically to be the game for only masternodes, not for stakers.
In other words, it's harder to find valid blocks for stakers.
I've currently got 300+ coins and I've only had 17 orphaned blocks in almost 4 months so you mostly finding orphaned blocks is definately not the norm that Myself and the couple other people I personally know who are staking as well.