My phone right next to it was getting 40 Mbps upload. Spent ages googling and trying loads of things with the wireless adapter settings and re-installing the latest​ ...
dell-xps-13-slow-wifi
Re: Very slow wireless networking on my Brand New Dell xps 13. · Open Device Manager. · Expand 'Network Adapters' · Right click the wireless card and choose​ .... I was having trouble with the AC-1535 in my (not quite so) new Dell XPS 15 and got a couple of answers from Killer support. I sent them a Killer diagnostics ... 939c2ea5af
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