guys i try to run 13 gtx 1060  3gb on asrock h110 and Ethos.

Everytime i get more then 8gpu connected my rig crasches..... and ist not the riser, it cant be that all 5 other risers are broken (i checked one by one the last 5 risers) one of them has started but crashed after 10 minutes.

Now ist like the gpu nr 9 which was mining the 10 minutes now won's start
 
And it was on mem 4000 and pwr 90 = 17,5   so i didnt overclock too much..... (THE first 8GPU was able to work on mem 4400 4 hours with no crashes )..

Problems started when i connected gpu 9 , 10 11, 12 or 13 ........

i have 2x molex + sata power connected

I also made an Isolation betwen risers so they dont touch each other...

what the füc* is wrong with These Mainboards .... ??

please advice !!