Well, to be honest the P2 issue is universal, and cards with Samsung memory suffer from it the same way as the cards with Micron. The problem, as you probably know it, is not that the card mines in P2 mode, but that when you close the miner window the memory clock jumps up for just a moment, and in that moment the driver/rig crashes. You set the memory to +500 in the MSI AB, but when you close the miner, the clock jumps to +700 for a bit. That can be avoided when you force cuda apps to run in P0 via nvidia profile inspector. It doesn't just change the mode for cuda apps to P0, but gets rid of that weird P2=>P0 jump so that the memory clock doesn't ever go higher than you set it with the +xxx offset.