I have a new computer with the AMD FX9590 CPU and RX480 8 Gb graphics card, Memory is 16GB. when I play American Truck Simulator on ultra settings the card runs at 100% capacity and locks up? running on a 4k 50" Samsung set at 4096x2160 res. have the same issue with other games???? is there a card that can handle this resolution? should I run 2 cards?