Hi Hoov,
This is the wireless configuration running on my Audience; by no means it's the ideal one since I'm not a network professional and this setup is based on what I've managed to "steal" as information from this community. this setup runs ok on a daily use with 25+ devices.
# dec/29/2020 06:36:38 by RouterOS 6.48
# software id = XK81-DGB7
#
# model = RBD25G-5HPacQD2HPnD
# serial number = BB0C0A314402
/interface wireless
set [ find default-name=wlan1 ] band=2ghz-g/n channel-width=20/40mhz-Ce country="united states" disabled=no installation=indoor keepalive-frames=disabled \
mode=ap-bridge multicast-helper=disabled ssid=Beta wireless-protocol=802.11 wmm-support=enabled
set [ find default-name=wlan2 ] amsdu-limit=2048 antenna-gain=3 band=5ghz-n/ac channel-width=20/40/80mhz-eCee country="united states" disabled=no distance=\
indoors frequency=5200 hw-protection-mode=rts-cts installation=indoor keepalive-frames=disabled mode=ap-bridge multicast-helper=disabled ssid=Beta_5G \
station-roaming=enabled wireless-protocol=802.11 wmm-support=enabled wps-mode=push-button-virtual-only
set [ find default-name=wlan3 ] amsdu-limit=2048 band=5ghz-n/ac basic-rates-a/g=12Mbps,24Mbps channel-width=20/40/80/160mhz-eeeeCeee country="united states" \
disabled=no distance=indoors frequency=5580 installation=indoor keepalive-frames=disabled mode=ap-bridge multicast-buffering=disabled multicast-helper=\
disabled rate-set=configured ssid=Beta_5G_2 supported-rates-a/g=12Mbps,18Mbps,24Mbps,36Mbps,48Mbps,54Mbps vht-basic-mcs="" vht-supported-mcs=\
mcs0-9,mcs0-9,mcs0-9,mcs0-9 wireless-protocol=802.11 wmm-support=enabled wps-mode=push-button-virtual-only