Slow Network speed : Asus X99E-ITX/ac Win 8.1 Pro

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Slow Network speed for Asus X99E-ITX/ac on Win 8.1 Pro x64 
Doing a speedtest.net on my X99e-ITX/ac (either of the two ports), I get a maximum of 30mbps down and 1 mbps up.

The machine right next to it is doing 355mbps down/236 mbps up.  Same network.  Same destination.

I swapped cables.  The speed stays fast on the machine next to it and slow on the X99E-ITX.  I swapped ports.  Same thing.  

I reinstalled the Intel LAN (dated 2/17) drivers from the ASrock support web.  I disabled wifi (since I was concerned it was using Wifi instead of wired LAN).  I've swapped routers/switches.  I tried different browsers (Chrome/IE)

What else am I missing?

Thanks!

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MarkV1 Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 30 Oct 2015 Status: Offline Points: 5	Post Options Post Reply Quote MarkV1 Report Post Thanks(0) Quote Reply Topic: Slow Network speed : Asus X99E-ITX/ac Win 8.1 Pro Posted: 30 Oct 2015 at 3:52am
	Slow Network speed for Asus X99E-ITX/ac on Win 8.1 Pro x64 Doing a speedtest.net on my X99e-ITX/ac (either of the two ports), I get a maximum of 30mbps down and 1 mbps up. The machine right next to it is doing 355mbps down/236 mbps up. Same network. Same destination. I swapped cables. The speed stays fast on the machine next to it and slow on the X99E-ITX. I swapped ports. Same thing. I reinstalled the Intel LAN (dated 2/17) drivers from the ASrock support web. I disabled wifi (since I was concerned it was using Wifi instead of wired LAN). I've swapped routers/switches. I tried different browsers (Chrome/IE) What else am I missing? Thanks!

MarkV1 Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 30 Oct 2015 Status: Offline Points: 5	Post Options Post Reply Quote MarkV1 Report Post Thanks(0) Quote Reply Posted: 30 Oct 2015 at 4:01am
	It was the ASRock XFast LAN utility. Uninstalled and everything went back to fast.

MarkV1 Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 30 Oct 2015 Status: Offline Points: 5	Post Options Post Reply Quote MarkV1 Report Post Thanks(0) Quote Reply Posted: 30 Oct 2015 at 4:05am
	And pardon my ASUS / ASRock flipping. I did too much ASUS as a young man and it obviously had a detrimental effect on my brain.