As of last Thursday my internet access has gone from a really solid 37Mbps down to unusable at times. The problem is not that the router disconnects (it still sits there happily thinking it's connected at 40Mbps), but that there are very large delays even when simply browsing.
The main sites I'm using for testing are www.bbc.co.uk, www.fast.com, and www.google.co.uk. All I'm doing in the test is trying to load a page. Sometimes nothing happens and times out. Using fast.com shows a range of values from 0 to 37Mbps. It can cycle good and bad several times an hour, or just a couple of times a day. Re-booting, or power cycling gets it working again. But maybe that's just coincidental, as if you don't reset, it does seem to recover by itself.
I've done a quick tracert on the above addresses and when it works everything is sub 10ms. When it's in a bad mood, then some hops are several seconds.
I've replaced the router (twice), the microfilter, and this issue shows up on wired and wireless devices.
The last call to my ISP said that they had identified a non-specific fault and would send someone out. Is "non-specific" just their term for "we don't know what's going on"?
So, what sort of error would cause these symptoms? Thanks.