Slow BR1 Mini HW2

Hi
I’m using a BR1 Mini for the first time. I believe it’s a Hw2 version as it has 2.4ghz only and 2 rj45 ports.
I’m using WIFI over wan.
Without the BR1 I get 60mbit directly connecting my laptop to wifi
Is the performance so low due to it being only wifi4 ?

I get the following performance with the BR1
LAN port directly connected to wifi as wan - 35mbit
LAN port directly mapped to speedfusion - 12mbit
WIFI to BR1 with WIFI as wan with or without speedfusion (shared wifi bandwidth?) - 12mbit

I can’t improve speedfusion performance by removing encrypion can I ? I use speedfusion cloud.

thanks
Rob