Good afternoon to all colleagues, I leave you the link to a great work by the colleague @woziwrt,.
in which he uses the latest Kernel Version: 6.6.71, working the 3 bands in be mode with all antennas at maximum power in all bands, you can use any country that will work perfectly for you.
optimal speeds, along with mlo in beta phase that also works very well.
banana-bpi-r4-all-related-to-mtk-sdk
I put a link to his last image, but it is better to go through the thread and see his work and all help is always welcome.
I hope I have helped and any help from you is welcome