Windows 10: Why does turning on a large One-Drive backup drastically reduce measured Internet speeds...

My Internet download speed is typically 16 Mb/s, but when I try to turn on One-Drive backup of large folders it is reduced, sometimes to 2 Mb/s. I assume that is the total data transfer rate, including that used by the One-Drive data transfer, because I don't know how a third-party speed measurement could separate the One-Drive contribution. If so, why is the Internet paralyzed by One-Drive data?

:)

 

Network speeds drastically reduced overnight.


Issue:Overnight my download speeds have dropped drastically on this PC. Other devices show typical speeds of 65 Mbps down and 10 Mbps up. This PC is showing roughly 5-7 Mbps down and 10 Mbps up on 5 GHz network and around 25 down and 10 up on my 2.4 GHz network. This is consistent over multiple tests and browsers of course.

Info:

• Windows 10-1511 Build 10586.164
• No firewall/AV enabled (Windows Defender disabled in GPEdit.)
• Linksys WMP600N Wireless adapter (802.11 b/g/n Dual band).
• D-Link DIR-850L router (802.11b/g/n/ac Dual band).

What I've tried/checked so far:

• Malwarebytes turns up nothing on full system scan.
• Task Manager / Resource Monitor shows nothing is using network out of the ordinary.
• Tried 4 different WLAN driver versions with the same results no matter which is installed.
• Ran TCP/IP stack reset (netsh i i r r).
• Reset winsocks (netsh winsock reset).
• Flushed DNS.
• Restarted PC.
• Powercycled router/modem.

Attempting Ethernet would be extremely challenging and I'm 99% certain this is specific to the WLAN adapter. Any suggestions or ideas would be greatly appreciated.

 

how can I measure my internet speed?

There's no generally accepted method for measuring your internet speed. Each website that offers a 'speed test' uses a different way of measuring, and different methods give radically different results.

One popular website is
Ookla.

 

how can I measure my internet speed?

how can I measure my internet speed?