Some new straps for polaris 20 cads ?
old straps can't exceeds 30 for new batches or maybe it is drivers issues ?
I returns 12 x Gigabyte RX 580 Gaming 8G because I can't exceeds good Hashrate
You returned perfectly good polaris cards because you were not able to exceed 30mh on them?
What were you expecting exactly? 40mh per card? What made u have such absurd expectations? Do you have any mining experience?
Do you understand that a better memory strap can help you push the last drop of mining performance out of a card, but it wouldn't change the card itself?
Do you understand how graphics chips, or memory chips, or any kind of chips work? Do you know the term silicon lottery?