Can't find ScanWhenAssociated, Other way to disable auto-network-scan

I have a Problem with my Asus AC 56 Wifi USB Stick: I have lag spikes. The only solution to fix those spikes was to tu off the auto-network-scan of Windows. It's pretty inconvinient, bc I have to run a script after the boot up of Windows to tu the auto scan on, and then off so I dont have to do open the cmd prompt and so on...

Now the thing I'm searching for: I found something about the Reg-Key "ScanWhenAssociated". There are many posts about it (this one for example) . You have to find the name of your device in one of the folders inside of one,but I wasn't able to do for mine. Then in the folder of the device you own, there should be the Reg-Key "ScanWhenAssociated". Although this might fix the problem too, is there a possibility to only let Windows scan for networks when you are connected to none?

Thanks in advance.

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