Myself and at least a couple others around here see this, not just with the apps store, but other things as well. It also doesn't seem to be consistent (at least that I've seen). In other words, there are times when the app store will not load and no matter how many times I retry, it won't work unless I disable LTE. Then there are times I've had it work very quickly the very first time. There's something odd and I'm just not sure how widespread it is.