Not only between 500 KH & 800 KH, we're also having these issues on Pool42.
We may have a little more blocks per day, but our situation definitely degraded as we used to have between 8 & 15 blocks per day
But 15 blocks of around 0.5 XMG is much less than one block of 40 XMG.
Of course, though back then it used to be in average blocks of 8.
And maybe shall I recall you that it was the maintenance mode where rewards (and therefore benefits) were drastically brought down compared to before.
Now, if we look back, 15 blocks at 8 XMG is worth 120 per day while here we have 80 per day.
We actually expected the income of our miners to be four times above what it used to be during maintenance...
That is true, of course.
But compared to not finding any blocks at all is just burning clouds.
That's right. It sounds like this update weakened small polls pushing people to go to large pools.