Gigabit network going to 100mbps

Dolby

Dolby

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I have two machines that were both running Windows 7 64 bit, both gigabit and a gigabit switch too. Transfer seemed to be around 100MB/sec which was fantastic.

I then got Windows 8.1 and formatted both machines, putting this on instead. Both devices say gigabit in the device manager, but they're running at 10-13MB/sec ... so back to 100mbps :/

Anyone had this same issue at all?
 
Seems the issue is with Broadcom NICs - the MIcrosoft driver works ans says gigabit, but the Broadcom driver is needed.

If one has onboard NIC, is it the maker of the board (ie Asus) or still Broadcom?
 
Get drivers from Asus first. They know possible issues with BIOS, etc.
After you get speed back, remember to enable jumbo frames, it will give another boost.
 
Disable IPv6 perhaps?

So far Windows 8 & 8.1 has not made any good impressions in my experience, except perhaps for superfast boot times in reviews, but that is where it ends.
Windows 8's network stuff has been a disaster from the beta/alpha stages - where it had routing table issues. Recently a colleague of mine showed me that you can change the WiFi AP that you're connected to when the computer is locked, which is kind of absurd from a security perspective.
 
Oh, and you should go to the network adapters' power settings and make sure that its not on "selective suspend".
 
Make sure cable is not cat5. I made that mistake and was wondering why it was so slow.
 
Hard-set speed and duplex on switch and machines.

Gbe shouldn't have this problem though.
 
All depends on the lenght of the cable. Up to 30 meters in home environment it shouldn't really matter. Besides, it was working before (before Windows upgrade).
 
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