Windows WiFi card and huge spikes

The problem

In my local network, I had huge network spikes on my laptop. Ping to my router were like:

Reply from 192.168.1.1: bytes=32 time=7ms TTL=64
Reply from 192.168.1.1: bytes=32 time=4ms TTL=64
Reply from 192.168.1.1: bytes=32 time=2ms TTL=64
Reply from 192.168.1.1: bytes=32 time=146ms TTL=64
Reply from 192.168.1.1: bytes=32 time=2249ms TTL=64
Reply from 192.168.1.1: bytes=32 time=84ms TTL=64
Request timed out.
Reply from 192.168.1.1: bytes=32 time=1068ms TTL=64
Reply from 192.168.1.1: bytes=32 time=2ms TTL=64
Reply from 192.168.1.1: bytes=32 time=3ms TTL=64
Reply from 192.168.1.1: bytes=32 time=3ms TTL=64
Reply from 192.168.1.1: bytes=32 time=3ms TTL=64
Request timed out.
Request timed out.
Request timed out.
Reply from 192.168.1.1: bytes=32 time=3ms TTL=64

WTF?

I’m Windows Insider and have fast ring updates, so I was afraid that it is this. My laptop has Intel(R) Dual Band Wireless-AC 8260. I found out on Google that there is a problem with a driver. It can cause spikes like this.

Solution

1. Open regedit.
2. Search for AdapterModel
3. In the same section try to find ScanWhenAssociated. If is not there add it as DWORD
4. Set value to 0
5. Repeat few times until you find all entries
6. Reboot

Results

Now my ping look like:

Reply from 192.168.1.1: bytes=32 time=2ms TTL=64
Reply from 192.168.1.1: bytes=32 time=2ms TTL=64
Reply from 192.168.1.1: bytes=32 time=2ms TTL=64
Reply from 192.168.1.1: bytes=32 time=1ms TTL=64
Reply from 192.168.1.1: bytes=32 time=1ms TTL=64
Reply from 192.168.1.1: bytes=32 time=1ms TTL=64
Reply from 192.168.1.1: bytes=32 time=1ms TTL=64

Better. I hope it is not a problem with Windows Anniversary Update