Do you have Smartbyte installed and enabled on your system? If so uninstall it and disable it in Task Manager under the Starup tab. Also what is the speed of your Internet connection from your ISP?

What is the signal strength and connected speed, and what protocol is used to connect? 

For other users who might have the same issue, what specifically fixed the issue?

Hey Splash, 

What did you do to fix it, I'm having the same issue, I have Gigabit internet, and WiFi 6E and in the same room every other device gets 850mbps down and my Alienware gets 50 Mbps down. I've tried literally everything I can think of. 

Installed a PCI-E WiFi card ASUS AC 1300 - The same one on my Windows 10Pro Machine that sits right next to my Alienware R12 Windows 11Pro machine. No change. 

This weekend I ran a 100' CAT6 cable from the modem to the machine same speed. 

I disabled all the Killer services and updated all the drivers, reset the PC to start fresh. It's killing me, man! 

What fixed it for you? 

Thank You!! 

@Daim 11​ I'm aware that your post is more than a year old. I have the exact issue since I purchased the new machine (R12, windows home edition) in 2020. I didn't investigate in detail as my max internet download speed had always been 50mpbs until I upgraded to 1 gigabit recently. I tried all methods to diagnose it (reinstalling latest driver, flush DNS, ethernet cable, windows safe mode, disabling QoS/power saver etc etc) and BOTH ethernet and wifi6 (killer(R) Wi-Fi 6 AX1650i) are always capped at 50mpbs or 6MB/s. interesting only speedtest.net using Chrome can reach max download speeds 900+mpbs but everything else like youtube using Chrome, steam downloads, general downloads are all capped at 50mbps. Seems like I am not alone. any resolution? I should have claimed this during my Dell's 3 year warranty!

@DELL-Chris M​ Hi Chris-M, see my post above. Have you come across any users who have fixed this issue?

@bongAU​ Splashhead64 never told any of us what actually fixed the issue. The fact that speedtest and chrome show download speeds of over 900 Mbps means the hardware is OK. Which points to some software fault.