hello,

I get slower internet speed by WIFI even if the laptop is just beside the router.

I recently bought a TPlink AX23 router. connected to my fiber modem with 600mbps speed.

my router to laptop via ethernet speed is 600-650mbps, the speed I get when I connect my laptop to router by WIFI is only 300-400mbps. the speed is significantly slower even though the laptop is right beside the router.

no other devices connected to the wifi when test was done.

no interference either since both router and laptop are right beside each other.

no QoS settings 

laptop is wifi6 capable connected to 5g wifi.

any inputs is appreciated.