The reason seams peak is because they are seamed with seam tape and then stretched. If you want to eliminate peaking, either glue down all carpet or sew all the seams. Yes, I can hear all of you who grew up in this trade sewing, saying "Is he goofy? Been there. Done that. Didn't like it!"
When I was installing, customers would ask me, "Is this seam going to show?" Or the world-famous "The salesperson at the store said this would be an invisible seam." A good response to that would be "Oh, the salesperson said this would be an invisible seam? You must have misunderstood him. Probably what he meant to say was that this would be an indivisible seam and it would never come apart."