Did some more digging through the forums and found this reply by @BFinkelstein: https://community.tp-link.com/us/home/forum/topic/224486?replyId=632310 Here is the solution he posted: The problem...

My router has not been providing the performance I expected. I am on Spectrum's 1 Gig internet plan, but speed tests from the modem, a wired PC, and PC on wi-fi aren't even reaching 400Mbps....