The article also refers to Restricted level only and not the default Normal.People who visit gHacks are typically not the “normal user”, however, this setting is easily turned back on in a few seconds. I don’t see a problem for someone testing out the connections.
This tweak is For Vista and Windows 7. Turning this setting off help increase the speed on my local networks. Tweak #4 Registry Tweaks This tweaks I applied to both the server and all the work stations, this also help with a increase in network speed and stability. Windows Registry Editor Version 5.00.
It should also note that the article is 2 years old. Microsoft could have changed things since then and also the bottle-necking that was going on could have also been fixed/changed since then as well. Common processors are more powerful than they were 2 years ago. I think internet slowdowns are mostly related to ISP problems, server problems or DNS problems. Wndows has a great TCP window management since the times of VistaInspired by this article I checked returning to OpenDns and got a 20% increase in my speed as I was checking using the “safe DNS” included in Avast. I regulary use NetSpeedMonitor that has the only problem of phoning home to the developper using Windows Explorer.
But I guess he is alright! I test speed using that pings to find the nearest server.
Didn’t notice any measurable difference disabling “Receive Window Auto-Tuning Level”. What i suggest instead is to change some settings on your Network adapter, namely:“Receive Side Scaling”When Receive Side Scaling (RSS) is enabled, all of the receive data processing for a particular TCP connection is shared across multiple processors or processor cores.
Without RSS all of the processing is performed by a single processor, resulting in inefficient system cache utilization.“Receive Buffers”“Transmit Buffers”. From this link:“Like all modern operating systems Windows has receive window auto-tuning to dynamically adjust the receive buffer size to the throughput and latency of the link.
Disabling this feature will definitely limit your Internet speeds. Auto-tuning is consistent throughout all variants of TCP and present in all modern operating systems. In the modern Internet the range of latencies and throughput speeds that must be accommodated is simply too large to manage statically and must be adjusted dynamically. If you have changed your AutoTuningLevel to disabled, please reset it to normal in order to restore your Internet speeds using the following commands in an elevated command prompt”. This article proved to be a timely find.
Hadn’t used a Dell Vostro 3700 laptop running Win 10 Pro 32-bit for three months, booted it up, ran Windows update, installed/updated a load of software (the latter including OpenVPN), after which the wifi would go down after a shortish while, a restart always led to a BSOD, DRIVERPOWERSTATEFAILURE error. All troubleshooting steps failed (selectively disabling/uninstalling/downgrading changes made etc). Made this change; system now stable (touch wood!). And the internet speed, which before had seemed quite noticeably sluggish compared to my other devices, is as good as the rest. I have a Lenovo Y700 running Win10 1703 (Creators Update) tethered to an iPhone 6SPlus w/IOS v10.3.1 hotspot via Vodafone 4G connection.When connected to the hotspot, I received very slow internet speeds when using Firefox v53 or Chrome v58 but other internet applications, including IE and Edge worked fine. Further testing showed that only HTTPS sites were affected.After much searching, I found that setting Auto-Tuning to disabled resolved the issue.Note that connecting through this hotspot used to work just fine, so I am unsure if it this was due to an upgrade in WIndows 10, or the recent upgrade to IOS, or possibly something in the Vodafone network.It also puzzles me that only HTTPS connections were affected (in FF/Chrome) and IE/Edge was not affected at all.Hopefully this info will be useful to someone.