This browser is no longer supported.
Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support.
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(128, 8%, 22%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EA%3C/text%3E%3C/svg%3E)
Hi,
My Surface pro 4 which I got from the Microsoft store, internet is running extremely slow.
When I log on it goes fast for about 20 seconds Then drops to a snails speed.
It Also makes all my other devices internet go slow as well.
If I shut down the surface pro 4 then the other devices internet is fast again.
I also have a surface pro 2 with windows 10 which also works fine.
Its just my pro 4? I tried the thing through regedit changing the value from 1 to 0 which didn't do anything.
Is this a hardware fault? Do I need to return it?
Thanks
Locked Question. This question was migrated from the Microsoft Support Community. You can vote on whether it's helpful, but you can't add comments or replies or follow the question.
Run regedit to open the Registry Editor:
Navigate to the following key:
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\mrvlpcie8897
Look for the key called TxAMSDU.
Double click or tap on it.
Now modify its value from 1 to 0.
Exit the Registry Editor and restart your device.
slow internet on surface pro 4
Does anyone know if Microsoft plans on fixing the slow speed on the surface pro 4? My pro 4 has the i5 processor, 4GB RAM, and 128GB of storage and is often very slow when opening a simple email. It is nearly impossible to watch most videos without numerous pauses, waiting for the download to catch up. This is my second unit, hoping the problem was an isolated thing with just a few units. I have an older HP Laptop with a 2.20GHz Intel Core2 Duo Processor and 4GH RAM that has no problem downloading the same email content that my surface pro 4 seems to have problems with. I love many of the surface pro 4 features, but the download speed is something very annoying. Microsoft just released many update "fixes" on 2/22016, but the download problem did not seem to improve.
Does anyone know for certain that this will be or CAN BE FIXED. If not, looks like I'll be returning my second pro 4 and going to something other that the Surface Pro 4. Disappointing!
Hi MSO523.
If you check the solution proposed in this thread: slow internet on surface pro 4 A user seemed to have the same problem. Could you please try the solution proposed there and mark this post as helpful if that solves your problem?
The latest Wi-Fi driver 15.68.9037.59 that was pushed out with the firmware updates earlier this weekseems to have fixed the WiFi performance for me, plus a positive side effect is that battery life seems to be improved: I was getting about 3-4 hours before and now I'd say 4-5 hours. Still no where near the claimed battery life and I don't push the device hard. I suspect battery life is wrapped up in the power management improvements that are supposedly coming.
Anyway, I can at least use my device consistently now for the purpose it was intended. I had to keep using older PCs and switching to my iPad for Skype calls due to the WiFi issues.
I use an Asus RT-AC68U router on both 2.4ghz and 5ghz bands.
Updated...
Hi Rob, do not roll your SP4 back to a previous version. Your SP4 came with a new driver technology called WDI for WIndows 10. Never roll SP4 or Surface book back to a non-wdi driver.
We run tests in house with your exact setup "Comcast device" and are confirming now. For most people the following workaround will work. We do not have any known issues with this device.
For the regkey, here are the instructions
1.Press Windows button. Search for regedit. Open it
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\mrvlpcie8897
Cause:
We have a known issue with .41 that results in low throughput with specific access points. The issue is specific to MAC layer aggregation (AMSDU over AMPDU) and only impacts a small subset of access points. We are working on a fix for an upcoming update. Until the fix is available, please update the registry key setting to work around this issue
-Joe
I just received my brand new i7 model and updated everything (including 1511 and everything as of today), which took forever and required a complete OS refresh. My wifi router is the ASUS RT-AC68U.
The internet works only when I'm right next to the wifi router. If i'm more than 15ft from it in another area of the house, it becomes so slow that it can't even smoothly play back youtube at 144p, in fact, I was going to reply to this thread on the SP4 but when I tried to login it straight up couldn't connect to the network. Similar situation of not being able to refresh regular web pages have occurred often.
I have tried the TxAMSDU in both 0 and 1, results are exactly the same.
I have also frequently experienced situations when wifi is connected but there is no actual internet connection, ie the yellow exclamation mark comes up, after which the wifi driver will restart and reconnect to the network.
I have tried running the internet network troubleshooter and have the following error "Windows could not automatically detect this network's proxy settings".
No other device on my network have any issues, this includes more than 10 other devices ranging from laptops to phones to iPads and other wired devices such as desktops and NAS.
I have always recommended Surface Pro line to friends and family, but this experience has seriously dented my belief in the device's usability and functionality as this is the worst out of box experience I have had to date. Please let me know if there is a proper solution to the issue, at the current state, I'm unable to use the device at all, and having just spent more than $3000 on a piece of tech that can't complete basic functionality is seriously frustrating.
