I've been noticing for a while now that certain apps are very slow on my home wifi. Android central, gmail, and Netflix. These apps work fine on data. And all other apps work fine. I can watch YouTube videos with no lag.
Mine works fine, but in fairness Verizon coverage is so weak (barely 2/5 bars of 3G) in my area I have the opposite problem. On AC I have to clean cache every so often.