Windows 10 upload capped?

[damnfinecoffee]

Hi guys,

 

A bit of an odd discovery here, hoping some networking wizards can figure this one out.

 

I have a 500/100 fibre connection. When I run a speedtest (it's my ISP's own) on iOS or MacOS I consistently get around 500Mbps down and 100Mbps up. No issues here.

 

The problem is on my PC workstation, whilst I do get around 500Mbps down, the upload appears to be capped at around 70Mbps. I can run the test 50 times over, day or night and it's are aways the same. At first I thought it might be the 10gig NIC in my PC, so I updated the firmware and drivers for this, no difference. I then tried my on board/mobo NIC, no difference.

 

Now this is where it gets a little odd: On my MacBook Pro if I boot into MacOS and run the speediest in Chrome I get 500/100. If I then use bootcamp to boot into Windows 10, and run the same test (on the exact same hardware!) back down to 500/70.

 

So from this I can only conclude that the issue is with Windows 10 itself, can anyone figure out why this would be the case?

 

The screenshot attached shows the upload speed difference between Windows 10 and MacOS. In this instance I was testing Windows 10 on the same hardware via bootcamp but this capped upload appears to be an issue on any Windows 10 PC on my network too.

Thanks in advance

[Kilrah]

Could be the garbage bootcamp drivers. Apple's never put much effort into those.

[damnfinecoffee]

1 minute ago, Kilrah said:

Could be the garbage bootcamp drivers. Apple's never put much effort into those.

Sorry maybe I wasn't clear, the results are the same on my PC workstation too, basically any Windows 10 PC.