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Network speed reduction due to too many switches?

I recently finished setting up my home network
here's the setup, modem > Wireless Router (DIR-655) > 1st Switch (ZyXEL GS105B) > hard wires throughout the house (which got messed up by the previous owner of the house)
and from those hard wires, in one room I have an E3000 set as Repeater (DD-WRT) which has 1 desktop connected to it through hardwire
then in living room I have another switch (ASUS GX-D1081/V2) for HTPC, TV, PS3

Not sure if it helps *(PIC)
https://www.facebook.com/photo.php?fbid=3333393223843&l=0a3031e93e

Here's the question
After everything is up and running, I notice my download speed decrease quite dramatically
usually I can get about 1-2MB/s (maxed out my internet bandwidth) now it's hovering about 600KB/s (even if no other devices are on) [tested in my room with the E3000 as repeater, Test with a 16MB PDF download through email]

Could there be a reduction due to too many switches and routers?
5 answers Last reply Best Answer
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  1. Best answer
    You don't need a repeater; try connecting your desktop directly to the cable and retry.
  2. PhilFrisbie said:
    You don't need a repeater; try connecting your desktop directly to the cable and retry.

    I know but because my house is pretty long, my phone + tabs can barely receive any signal from the DIR-655 (the cable panel is in the walking closet)

    But I haven't tried that yet though
    Will try that after work, will report later
  3. The official limit for twisted pair Ethernet is 100 meters. I envy you if your house is larger than that ;)
  4. Best answer selected by qhoa1385.
  5. PhilFrisbie said:
    The official limit for twisted pair Ethernet is 100 meters. I envy you if your house is larger than that ;)


    LOL I was talking about wifi signal being block and can't reach my room, basically the router is in a metal box and at one end of the house and my room is at another

    ;)

    Anyway, tested without repeater, and speed got back to normal
    Thanks :D
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