I seem to have some major WiFi issues on my LG G2 D800. What happens is I connect to our home network (connected to the same WiFi network on my iMac, get 25 Mbps on there), and it shows that I have full bars. However, Facebook, Instagram, Google Play Store and everything ceases to load while on WiFi. It eventually will load on the Play Store, but it takes about 45 seconds just to load any icons. I'm using the stock ROM, and previously had a Galaxy S3 which had none of these issues. One more thing, whenever I connect to 4G only, everything seems to load better. Does anyone know what this problem could be?