I have ASUS RX580 8GB with Samsung memory. I've been trying for weeks and I feel like I've tried everything but I can only get the card in the higher 26mhs range. I copied the stock 1750 strap to the 2000 strap and undervolted. It seems any time I adjust the clock speeds it becomes unstable. I tried ubermix 3.1 and it goes to about 28 or 29 for a few seconds and then drops down to about 22-24. Any ideas? I have 12 cards so if I can squeeze a little more performance out of each of them it will greatly increase my hashing.