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Windows 7: Slow network speed

10 Jul 2014   #1

Windows 7 Ultimate Edition (64-bit) Service Pack 1
Slow network speed

Hello all,

I have a problem with my home network and I can`t figure out where the problem is.
Hope you can help.

I have a NAS with big files on it because of this I want to have a fast intern network.
So I bought a gigabit switch (Linksys SE2500), Put this between my computer (motherboard ASUS X79 Deluxe, using the intel port) and my NAS (Iomega ix2-200) all the devices support gigabit speed.
After this it is connected to a HUAWEI HG655d Router/Modem 10-100MBit/sec

If I am correct in this setup it would not use the HUAWEI, as I can connect directly to the NAS trough the switch.

But now I try to get a file from the NAS to the computer and it downloads at 10 Mbit/sec.

How is this possible what am I doing wrong to get it this slow....
I would expect a speed that is 100x faster, or at least 10x faster.

Added a few screenshots of what I have tested and seen.

Any help is greatly appreciated.

Attached Images
Slow network speed-diagnostics.png Slow network speed-download-speed.png Slow network speed-link-speed.png 
My System SpecsSystem Spec
10 Jul 2014   #2

Windows 7 ultimate 64-bit

I know this may sound like something simple; but; have you tried something as easy as unplugging the power plug(s) to the associated devices and rebooting them to get them to "reset". If not I would go ahead and try that simple idea first. Sometimes just resetting them will get them to reconnect at the proper speed. If not; I would check the adapter properties for the proper settings. I cant tell you specifically what those settings would be since I havent had experience with a lot of networks per say but what i mentioned so far is worth a shot.
My System SpecsSystem Spec
10 Jul 2014   #3

Windows 7 Ultimate Edition (64-bit) Service Pack 1

@matts6887: Thanks for the suggestion, however it didn`t work.

Did some testing in the mean while though.
1) Tested with my computer and a different computer, just one cable in between and transfered a large file.
Speed went up till 120 MBit/sec. Looked up on wiki 1 Gigabyte is 0.125 gigabit.
So calculating it back it matches.

2) added the newly purched gigbit switch so Computer -> Switch -> Computer.
Still same numbers so that goes great. (Switch works)

3) Tested my computer with the switch and the NAS, I go back to 10 MBit/sec.
BUT, I tested with the other Computer from test 1 and this gives again ~120 MBit/sec.

So 2 computers that work great together but once seperated they give different speeds...
I know this doesn`t make the problem easier but I can`t get my head around this...
My System SpecsSystem Spec

10 Jul 2014   #4

W7 Pro x64 SP1 | W10 Pro IP x64 | W8.1 Pro x64 VM | Linux Mint VM

I notice you have an ASUS motherboard, do you by any chance have AI Suite installed?
My System SpecsSystem Spec
10 Jul 2014   #5

Windows 7 Ultimate Edition (64-bit) Service Pack 1

No I don`t have AI suite installed.
I do use MSI afterburner for logging purposes of the temperature.
Why? can AI suite help solve this problem in any way?
My System SpecsSystem Spec
11 Jul 2014   #6

W7 Pro x64 SP1 | W10 Pro IP x64 | W8.1 Pro x64 VM | Linux Mint VM

Quite the opposite, the iNetwork Control in AI Suite can seriously cripple network speeds as I found out the hard way. At least that's one possible cause ruled out.
My System SpecsSystem Spec

 Slow network speed

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