1.1 was just released. It doesn't solve this weather pause (inherent with X-Plane), but it solves FPS issues as well as a multitude of others. You may want to check it out! The pausing is caused by the way that X-Plane loads real weather. It is highly dependent on one's system how long such a pause will last, however, it is even present in default clouds. The reason you notice it more here is because SkyMaxx Pro will load no two clouds the same, thus it takes more time for your CPU to compute what goes where and your GPU to draw these newly rendered clouds. The pause takes place when real weather decides it's time to load new METAR data from the closest station. The way to solve this will be a weather injector in the future. I personally don't have bad pauses, but a number of users do when the new real weather loads. We're continually looking into this, but for now, X-Plane rules how this takes place and we're stuck in its "cell".