I was able to make it running with 3 cards so far, now waiting for 2nd PSU and add the other 3 missing ones, I read dmsg and it was failing a few times with the error "GPU at 0000:03:00.0 has fallen out of bus", couple of reboots and it worked, I noticed a few errors when mining DCR, I needed to add to oneBash file a couple of exports in order to make some errors disappear:

export GPU_MAX_ALLOC_PERCENT="100"
export GPU_USE_SYNC_OBJECTS="1"

but DCR still is having some nonce errors and not actually mining anything

Another thing I notice it's a typo in the DGB (written DBG in one variable) in the oneBash file, didn't try to mine DGB but it might give problems