Slow WiFi only on home network and only on Mac
I have a 2010 MacBook Pro and internet downloads and especially viewing any videos (like youtube) are painfully slow at home. Videos basically load for a few minutes, play about 5 seconds of video, then load for a few more minutes. I know it is not the actual computer, b/c if I connect to another network elsewhere everything runs fine and fast. Also, it can't totally be my network since we have a few PC's on the same home network that are significantly faster with downloads. Things that take 20 seconds on my PC's take up to 10 minutes or more on the MacBook. Are there settings somewhere that I have wrong? Thanks, -Amy
So the RSSI and Transmit look okay (the speed 54 indicates a wireless G router). So your new Mac Book can run on wireless N protocal which is faster, so a thought for the future is an upgrade to a new router (which might solve all your problems). When I experienced much of what you are seeing, eventually I traced this to the WiFi router and got a new Airport express with N capability. I could have tried patching the router (mine was Netgear) but the added speed of the N standard pushed me onto a new router. My work PC's seemed to work okay on my old system and work great on the new Apple router.
But if you can see the other networks and find channel 6 or 11 completely open I would recommend changing the Linksys router to one of those channels and seeing if anything improves. These channels have no overlap in frequency with each other, but are also the most popular. If these are taken it still would be worth a try. Other interferences such as cordless phones and microwave ovens and the like will also affect G protocol wireless so moving the channel helps skip around them as well.
Before you make a change I suggest going to www.speedtest.net to verify your current performance. Maybe do this once in awhile for a day or so to get a measure of your current best and worst performance. This is a java applet that sends some packets to a local server and reads some down. It gives you a speedometer interface that gives you a Ping value (time for one packet to go between computers, should be in the 10 to 30 millisecond range) and then an upload speed and download speed. The web site actually keeps track of your speed values by date and time so you can review them as you make changes.
I would pick the recommended server. They select one near by but not at Comcast. So this test looks at your service between Comcast and the world. Comcast actually has a localized version of this same program www.speedtest.comcast.net, and so it can test your speeds within your own network - basically to Comcast and back. So this tests your line to Comcast.
Do this testing with your laptop connected by wire to your router (so this tests your speed without the WiFi) and then connecting to the internet via the WiFi. Without the WiFi and directly to Comcast's version of speed test, you should get the speed you are paying for from Comcast. The wired test to the speedtest.net suggested server gives you a more real world speed.
Once you have these base lines then change wifi channels and see if that helps.
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