Wifi download speed slow


I've tried to create a dumb access point, it's all up and running but I'm only getting about 90mbps via wifi on the 5ghz signal and 40ish on the 2.4ghz signal

I'm pretty new to the whole openwrt thing so appreciate any help at all, there's a 500mbps ethernet line going into the router and when I connect via LAN I get 450mbps download speed

thank you!