In need of some help from people that have multi gpu rigs, I have a 6 rig rx480 8gb setup but the miner will not start up the cards that are connected to the pci, I have 4 pcie slots and 2 pci, I use an pci to x1 adapter on them with an x1 to x16 powered riser, I have only been able to get them to start once for about 15 seconds then they went to 0 and I get an "gpu hangs in opencl call" on just those 2 cards, they have not worked since, all other slots work great and are hashing over 70 with 4.0 running, not using -i at all, using an asrock z97 anniversary board, 1840 celeron processor. Switched back to Monero to mine and check the cards and they all started up just fine with 630 average on all cards so I know they are working. Is it the fact that I am using pci slots? should I just get a 6 pcie motherboard and switch it all over to that?