You'll want always to use a reliable WiFi connection rather than 3G or 4G.
Even if you have good signal strength showing for your WiFi connection, your bandwidth may be limited if the network is congested (For example, if there are many other users sharing the network and/or others are doing bandwidth-intensive activities such as streaming video.)
If the issue persists, please submit an in-game ticket to our Customer Care team, they will assist you further. Here's how you can submit an in-game ticket:
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Even if you have good signal strength showing for your WiFi connection, your bandwidth may be limited if the network is congested (For example, if there are many other users sharing the network and/or others are doing bandwidth-intensive activities such as streaming video.)
If the issue persists, please submit an in-game ticket to our Customer Care team, they will assist you further. Here's how you can submit an in-game ticket:
http://ggnbb.glu.com/showthread.php?1699-How-to-create-a-ticket