Broadband speed limited?
Oddly this all arose from the ethernet port on my main PC suddenly starting to fail. I considered this to be something I could easily fix by using a gigabit USB ethernet adapter and initially it worked and I got a gigabit connection. However it all came to an end when my broadband connection was limited to 100 mbps. I assumed it must be the adapter but having changed this 4 times they all suffer from the same problem, 1 gigabit then a sudden drop to 100 mbps. And it not just my PC my mobile phone initially had a 400 mbps connection then suddenly it's restricted to 100 mbps. Again the really infuriating thing is that when I used wifi on my main PC it has no problem maintaining a speed that I thin is reasonable considering the age of my PC and that's about 430-450 mbps second using the RealSpeed - SamKnows site. All my streaming devices are the same, great speeds at start then restricted to ~100 mbps. By the way I have a 1 gigabit broadband contract and a Hub 5 with a single Pod. All ethernet cables are Cat6 or Cat7 and all iperf3 and the CLI version of speedtest readings on my Raspberry 4 and other PCs are all about 950 mbps, i.e. what I expected. Any ideas what's going on?
The 94Mbps download is a common indication that something is limiting an ethernet connection to 100Mbps instead of 1000Mbps. This could be a faulty ethernet cable or the devices at either end.
