New XPS 13 9370 with the same issues reported widely with previous versions of the XPS 13 with Killer WiFi card namely very slow internet speeds at times and regular cut-outs.

I've done all the recommended actions such as removing & reinstalling the latest KIller WiFi suite/drivers, ensuring Windows is up to date and updating to latest BIOS but the issues still persist.

No other wireless devices connected to my router (BT Hub 5) have any problems & I have a wired speed of up to 75Mbps, wireless speeds on other devices are generally between 50 - 70 Mbps. The XPS when it chooses to work correctly will achieve similar speeds but often, as per the last two days, struggles to get above 5 - 15 Mbps and cuts out completely at times too.

Killer's site provides little help, blaming problems on your router! The only real ie successful solution I've read about is replacing the Killer card with an Intel one so why on earth to Dell persist in using the Killer Wifi card which is clearly not fit for purpose?

I'm currently awaiting a replacement unit from Dell who hope this will fix the WiFi issue, I rather doubt it but hope to be proven wrong.

 

Apart from the WiFi issue i really like my XPS13 but ultimately may have to return it for a refund; after all what's the point of a flagship ultra-portable laptop that cannot connect reliably to the internet?

Dell should be offering customers with the faulty Killer Wifi cards the option of sending the unit in to have an Intel card fitted instead.