Hi there nvoc-ers !

I may be stupid or definitely not paying enough attention to something as i can't for sake of me to be able to make AsRock H110 to recognize 13 x 1060 6GB GPU's. Tried with nvoc17, then 18, then 19..does not see the gpu on the last pciex slot.
It mines beautifully with 12 GPU's but there is no way i can make it see all the 13 GPU's.
The rig is built using a G4560, i tried using an i3... same result.
2 x Corsair 1000 W PSU's powering 6 gpu + mobo + risers and the 2nd powering 7 gpu's

Any hints ?