[Deschodt]

I have a vexing internet speed loss in the house...

I run a Verizon FIOS actiontec modem in the garage, theoretically spitting out 20 Mbps download / 5 upload. Yet I get about 5/1 in my home office, wired...

The garage modem has 4 ports with cat5 ethernet cables plugged into it that go throughout my house. I checked speeds at the end of each cable, 3 of the 4 give me the same 24 Mbps, which is better than advertised (some are 30-50ft cables). Then the 4th is 100Ft cable running in the ceiling. At the end of that I have 12 Mbps only !!! 50% loss... Huh ??? Didn't think length affected throughput this much !

Worse, that one 100 ft cable (going to the home office) goes into a hub and splits into 3 computers and one vonage device - never all used at the same time... Out of the hub, I get 5 Mbps.. Again, WTF ? I disconnected all devices out of the hub, no matter, it maxes out at 5... out of the bad 12 to begin with !

To add insult to injury, I added an N wireless router off the primary in the garage, verified 24 mbps at the cable, yet the wireless signal spits out 3 Mbps in speedtests, in N -only mode !! I decided to enable the old b/g of the primary router in the garage again to compare and that is faster, at 6-7.. Still slow, but faster...

Is it possible that I got a bad hub, a bad wireless router, and a bad cable all at once ? Or am I missing a magical setting I'm unaware of ?

I'm borrowing a cable tester to test the 100Ft cable wiring... Would passing in the ceiling close to electrical wires or neon (despite power being turned OFF) explain a 50% speed loss ?