Slow Speeds from Hub4 to PC on 1Gb/s - A partial Solution and Virgin techs take note!
3 weeks ago
I upgraded my package to the 1Gb/s service on 04/07/2021 and was appalled at the speed from the hub to my pc, which was around 300Mb/s! Changed cable from cat 5e to Virgin media Cat 6 cable, no change in Hub4 to computer speed. Trawled through posts here and on a more general line through the internet, all the same suggestions - go to modem mode (does not work), change cable, change hub port, update drivers, disable Qos, etc etc. Nothing worked until I tried this.....
Open a cmd window using admin privileges and at the command prompt type "netsh int tcp set global autotuninglevel=disabled" without the quotation marks and hit enter. Then do a Samknows/Realspeed test but keep the command window handy. You will get the same speed to the hub but an even more reduced speed Hub4 to computer. Open the the command window again and at the command prompt type "netsh int tcp set global autotuninglevel=normal" again without the quote marks and hit enter. Then go back and re-run the Samknows/Realspeed test.
This is what I got..
So it defintely is a windows auto-tuning thing (by the way I am on Windows 7 64Pro).
It will be interesting to see....
1.If anyone running Windows 10 can get the same results and
2. More interesting if those clever techs at virgin can find a way or implement a fix to the Hub 4 to
make entering a command prompt window unneccessary.
Re: Slow Speeds from Hub4 to PC on 1Gb/s - A Solution and Virgin Techs please take note!
3 weeks ago
I have thought about this a bit more and come to a conclusion. Given that Windows auto-tuning is in place when you have your previous broadband package(or perhaps none), changing your broadband speed would mean that you have to disable autotune and re-enable it to let windows networking know that the networking environment has changed. Since I have searched through this forum and others and not found anyone suggesting to do this, I do not think it is done and it could well be the source of peoples problems when they upgrade to a greater speed.My speed from Hub 4 to computer has remained at that level since I did it and I would suggest people try it. One other thing, clear your browser cache before running Samknows/Realspeed so you get a clear reading.