What type of router are you using? have you checked it's setup?
The router is an OptusYes/Netgear. And I'm not sure how to check the settings or what you mean.
I've also realised if I'm in a game I can continue to play it, however as soon as I close the game I cannot re-open it, yet the wifi still has full bars and strong signal...very frustrating any help would be greatly appreciated.