It says the Wireless link speed on the Wireless AC card is 866/433 mbps when I check the properties via Windows 10. However when I do Speedtests or downloads it maxes at only 100mbps download. My 2016 MacBook Pro gets 350mbps down with a connected link speed of 877mbps with no issues on it's Wireless AC card as well as my XboxOne S. When I log into my Router and view connected devices it also shows the Dell connected with a link speed of only 390mbps. This is supposed to be one of those Dell gaming laptops and it can't even get true wireless AC speeds?
Thanks for posting.
Apologies for your computer is not working as expected.
Please run the system diagnostics by pressing F12 at boot up to see if there's any issues there, if the diagnostics run okay, then please contact Tech Support in your country and troubleshoot with them over the phone. Thanks.