Killer 1435 Horrendous Wireless Performance

I've had the Alienware 17 R4 for a week and I'm struggling to get the Killer 1435 Wireless card to function without dropping connections. The WiFi gives you the impression it's still connected but it just stops receiving packets and the chances of this happening are extremely high when the card is pushed to its speed limits for the Internet connection. Sometimes I'll see an exclamation mark next to the WiFi icon in the taskbar, sometimes I won't. But the drop happens almost consistently and every few mins. FYI: I have a Netgear AC1600 router connected on 5Ghz AC which is pretty nice.

I know this card has given a heartache to almost a good 90% who've got it but I was under the impression that it was fixed by Killer through their driver updates however not for me. I've tried the latest drivers from Killer's website(tried without their Control Centers, Network managers, tried with direct INF installations through Have Disks), Dell.com Service Tag, Windows Update, Reinstalling OS, Switching the Power saving settings to Max Performance in the Power Plan settings (as advised by Killer tech support) to little or no avail. And Killer's tech support hasn't been that useful so far and they couldn't find anything when they went through the Killer Diagnostics files I supplied to them.

Having searched online, I see people just simply replace their Killer 1435/1535 cards with an Intel 8260/8265 card and simply dump the Killer cards. I've just connected the laptop to Killer E2500 Ethernet for the time being and it works perfect on that. Could Dell/Alienware help resolve this or send me an Intel 8265 card instead if needed? Thank you.