Setting up my first unRAID NAS, it's butchering my wifi speeds.

Hey everyone, so I'm very new to building and managing a NAS as well as networking in general but I've been pretty excited about giving it a shot and building my first NAS. Currently my NAS is doing a parity-check after it got stuck syncing when stopping the array causing me to hard reboot. One thing I have noticed over the last day or two when booting and setting up the NAS is that my internet speeds, particularly wifi, have been absolutely demolished. I don't really understand why as I'm not even doing any file transferring or anything, like I mentioned it's just doing a parity check. My ISP is typically putting out 500+ mbps, which I am getting over the ethernet, but the wifi hardly works at all with the NAS on. My phone seizes up constantly, won't load content, and even says there is no internet connection on my wifi, smart tvs and other wireless devices also aren't loading their content and when I do start a show or movie it takes a while to load and then is at an ungodly resolution/quality, completely unwatchable.

Is there something I have done wrong that can cause this? Though I really haven't even got the chance to set up anything other than my parity at the moment. Or is this something I just didn't account for? I mean with 500+ mbps I don't see how my internet wouldn't be suitable for a NAS, but I don't know how to explain what's happening. Also the NAS is plugged directly into one of my routers LAN ports.

Edited December 20, 20223 yr by ANJ_