Hi! It appwars so your first problem is your GPU. GT 550M is very weak, especially because it has M at the end(laptop GPU). Minimum requirement says GTX 470(second number means so this one is gaming, but the first one tells so it is old). GT 550 is newer, but lower and M at the end means it is even weaker, because it is small, square shaped chip that fits in your laptop. I think so your problem is hidden inside of your low GPU, but I might be wrong…