Wifi Bandwidth

I'm having a strange experience with my internet speeds and it seems to be limited to iOS & TVOS device. I have a 2022 Macbook Pro (Monterey) I just tested at around 600Mbps whether I connect via ethernet or WIFI. When I run the same test on my iPad Mini or iPhone 14, I can barely eek out 1Mbps or less. I can't run an actual speed test, but most of the time lately my AppleTV Gen 4 connected to the same WIFI network also can't seem to access enough bandwidth to stream video either. I would just blame the WIFI/router if my Macbook weren't able to achieve 600Mbps on the same network 3 feet from the other devices. Is there anything I can look at that might make sense out of this? The iPhone is brand new - as in taken out of the box 2 days ago, so I don't think it's the hardware either. Thanks.