Four lights flew in formation very fast across sky in diamond formation and then changed formation

They appeared quickly with no noise traveling Se to Nw across the sky. It happened so quickly it’s hard to describe exactly. At first it appeared to fly as one object with four lights, before they went behind trees they shifted from diamond formation to a disorganized shape. They made no noise and I feel like they were flying at a height of non commercial flight. It was me my wife and a neighbor and his wife in our hot tub watching meteor shower.