Bring VCCIO down to 1.05 and VCCSA down to 1.0 and see if you are still stable.
If this causes instability(doubtful) I would adjust VCCSA within a range of 0.95-1.1 and VCCIO between 1.05 and 1.1 and see what works. Those seem to be pretty standard ranges for these voltages across the overclock's I've seen on here and from my own experience on these chips.
The other voltages you listed all seem fine. The other I would look at to make sure it is not on auto is VCCIN. I think for most people 1.92 has been sufficient but It can range from 1.9-1.95 depending on your overclock.
As always, make one change at a time and ensure stability along each step of the way to make the source of any problems that may arise more apparent.