I own an Alienware 13 R3 which carries the Killer 1535 Network adapter. It is giving me terrible issues. Specifically, I can't get upload speeds better than 1 Mbps (as ridiculous as it may sound). After trying out all the available self-help tools (updated drivers, tried again, didn't solve the issue, completely uninstalled Killer software and downloaded most recent version, re-installed drivers, changed wireless settings in Device Manager) the issue persists. 

I'm of the opinion the network adapter is damaged, and I need to replace it. 

Does anyone have a recommendation for a wireless adapter that works well as a replacement for the Killer 1535? 

Some internet posts recommend Intel Wi-Fi 6 AX200 card, and I seek opinions from people who may have already replaced their network adapters. 

Thanks in advance for any opinions you may share.