AirPort Extreme Router suddenly gets very slow.
2.5 year old AirPort Extreme router worked well until 2-3 months ago when it began throttling down my internet speed. Was getting 25Mps for download and it's now 2Mps. Upload not affected. When I connect ethernet directly to the PC it goes back to 25Mps. I haven't made any changes to the physical environment or any of the settings. 95% of the time there are only 2 phones and 2 Windows 7 PCs as clients. Occasionally there is an Xbox Live online as well.
I have changed my ethernet and modem cables and neither helped. Have also googled changes to the PC settings and none of those helped either.
Any help would be great because the internet is nearly unusable most of the time.
Thanks
Chris
AirPort Extreme-OTHER, Windows 7