Raspberry 3 wifi 2x slower with openwrt than raspios

I'm using Raspberry Pi 3 Model B Rev 1.2 and with openwrt 22.03.5 I get about 3 MB/s with wget and python3 -m http.server combination, that is python running either on fedora laptop or rpi and wget running on rpi or fedora laptop. But if I install 2023-05-03-raspios-bullseye on rpi then I get 5 MB/s when downloading from rpi and 6 MB/s when rpi is downloading from laptop. Is this expected? Using or not using encryption when openwrt is access point doesn't make a difference. With raspios I'm using fedora laptop as hotspot, could that explain 2x speed difference?