I've been having problems when using wireless connection with my PS3 when using my laptop' internet at the same time, mainly while playing videos. For example, while playing any Call of Duty game, my connection is 3-4 bars. However, when my laptop's internet is being used, it drops to 1 bar and becomes intolerably slow and laggy. Is there any way to solve this problem besides not using my laptop at the same time, because other people also use it often while I'm playing.
What wireless router are you using? Find the brand and model number.
Often, you can find a software update for your router that will improve connection quality and fix bugs. You can also try adjusting the wireless channel between 1, 6 or 11, or you can try restarting your router.
Don't bother looking for firmware updates for the Actiontec. If there are any, then Telus will deliver them automatically to your Actiontec gateway.
Do try the channel setting though. Restarting the router can help too, because UPnP is broken and stops working after a period of time. It becomes difficult for other players to connect to you when UPnP stops working.
The trouble with the Actiontec gateway is that it's hard to bridge and turn into a regular modem without flashing custom firmware (problematic if you ever need Telus to diagnose your connection). Telus also doesn't offer a standalone modem, or they're very difficult to obtain the last I checked. I ended up going with custom firmware and using my personal router behind the Telus gateway.
Adding a personal router without bridging the Actiontec gateway will likely result in connection difficulties in online games.