In reply to a post by AlistairS:

Same setup and hardware as I had with the VM500 connection which didn't suffer from this issue.

The additional 400 Mbps is quite a significant increase, this is not the same as the 40 to 80 Mbps type change. I would compare all your application settings with idmanager and check if you use the same security / antivirus / malware software etc.

Unless ive missed it have you said what router you are using?
Obviously it should be able to cope, but you never know.

My router or the OP's?

There's a bit more work for the router to do on Openreach FTTP at close to gigabit than via VM cable modem, but I would expect a simple speed test out to prove the basic connection is hitting the target. f the hardware is struggling it wont make 900+ off the bat.

My Router is an Asus RT-AC86U runing latest Merlin Firmware

On Wednesday night I decided to change OS from Windows 11 to Linux Mint.



Full speed now on Linux Mint - RESULT

Going to give Windows 10 a try over the weekend. However, if its the same as 11 I will move over to Linux on the server permanently

Good that you found the issue, but when in your OP you said:

Never had this with Virgin Media.

What speeds were you previously running via VM when there was no issue?

In reply to a post by Pheasant:

Good that you found the issue, but when in your OP you said:

Never had this with Virgin Media.

What speeds were you previously running via VM when there was no issue?

The 500 connection with VM

Thanks. Apologies I just read the thread again and saw that you had noted the VM connection speed.

Windows builds do tend to be more problematic when it comes to being able to sustain near gigabit connections. Linux and MacOS generally cope much better.

If the machine is experiencing this on a clean build of W11 or W10 - without any other software that could compromise the throughout of the network (third party firewall, AV and anti malware are the usual suspects) then its down to Windows and NIC driver interaction / NIC capability. If you’re wanting to stay with windows then a different NIC (perhaps for example from Intel rather than an integrated mobo NIC) could help.

thanks for the explanation. Switching to linux isn't an issue, I have run it off and on for a few years now.

Yep I’d simply stick with a build of Linux you like then. Good luck with it all.