Hi guys

I am pretty happy with my Mikrotik Audience, but the download speeds are 2x slower than upload.

I get around 300-350Mbs upload and about 150Mbs download

The channels are not crowded. The coverage is good between 45-55 dBm , I am using only one AC band (1733Mbs)

Can somebody please advise what can be a problem?

Thank you

Post your config, have you tried another client?

Use only wlan2 interface instead wlan3.
wlan3 was placed in this AP only for MESH purpose.
wlan2 can make 80Mhz channel width, wlan 3 support only 40Mhz channel width.

Use only wlan2 interface instead wlan3.
wlan3 was placed in this AP only for MESH purpose.
wlan2 can make 80Mhz channel width, wlan 3 support only 40Mhz channel width.

Don't use auto or XXXX channel widths

Thank you all, here is my current config:

[admin@MikroTik_Audience] > export compact hide-sensitive
# jun/03/2020 10:47:48 by RouterOS 6.46.6
# software id = M0L0-MR8G
#
# model = RBD25G-5HPacQD2HPnD
# serial number = B6BE:xx:xx:xx
/interface bridge
add arp=reply-only name=bridge-guest
add name=bridge-main
/interface wireless
set [ find default-name=wlan1 ] antenna-gain=3 band=2ghz-b/g/n channel-width=20/40mhz-XX country="new zealand" default-authentication=no disabled=no frequency=2447 mode=ap-bridge name=wlan1-main ssid=wifi
set [ find default-name=wlan2 ] antenna-gain=0 band=5ghz-a/n/ac channel-width=20/40/80mhz-XXXX country="new zealand" mode=ap-bridge name=wlan2-main ssid=wifi
set [ find default-name=wlan3 ] antenna-gain=0 band=5ghz-a/n/ac channel-width=20/40/80mhz-XXXX country="new zealand" disabled=no mode=ap-bridge name=wlan3-main ssid=wifi
/interface wireless security-profiles
set [ find default=yes ] authentication-types=wpa2-psk eap-methods="" mode=dynamic-keys supplicant-identity=MikroTik
add authentication-types=wpa2-psk eap-methods="" management-protection=allowed mode=dynamic-keys name=default-guest supplicant-identity=""
/interface wireless
add disabled=no keepalive-frames=disabled mac-address=76:4D:28::xx:xx:xx master-interface=wlan1-main multicast-buffering=disabled name=wlan1-guest security-profile=default-guest ssid=wifi_guest wds-cost-range=0 wds-default-cost=0 wps-mode=disabled
add keepalive-frames=disabled mac-address=76:4D:28:xx:xx:xx master-interface=wlan2-main multicast-buffering=disabled name=wlan2-guest security-profile=default-guest ssid=wifi_guest wds-cost-range=0 wds-default-cost=0 wps-mode=disabled
add disabled=no keepalive-frames=disabled mac-address=76:4D:28:xx:xx:xx master-interface=wlan3-main multicast-buffering=disabled name=wlan3-guest security-profile=default-guest ssid=wifi_guest wds-cost-range=0 wds-default-cost=0 wps-mode=disabled
/ip pool
add name=dhcp_guest ranges=10.0.1.2-10.0.1.254
/ip dhcp-server
add add-arp=yes address-pool=dhcp_guest disabled=no interface=bridge-guest lease-time=23h59m59s name=dhcp1
/queue simple
add max-limit=10M/10M name=wifi_guest_limit target=bridge-guest
/interface bridge port
add bridge=bridge-main interface=wlan1-main
add bridge=bridge-main interface=wlan2-main
add bridge=bridge-main interface=wlan3-main
add bridge=bridge-main interface=ether1
add bridge=bridge-main interface=ether2
add bridge=bridge-guest interface=wlan1-guest
add bridge=bridge-guest interface=wlan2-guest
add bridge=bridge-guest interface=wlan3-guest
/interface wireless access-list
add comment=mtik_hap_ac2_2.4GHz interface=wlan1-main mac-address=C4:AD:34:xx:xx:xx vlan-mode=no-tag
add comment=LIFX interface=wlan1-main mac-address=D0:73:D5::xx:xx:xx vlan-mode=no-tag
add comment=LIFX interface=wlan1-main mac-address=D0:73:D5::xx:xx:xx vlan-mode=no-tag
add comment=Kettle interface=wlan1-main mac-address=BC:DD:C2::xx:xx:xx vlan-mode=no-tag
add comment=CCTV interface=wlan1-main mac-address=50:EC:50::xx:xx:xx vlan-mode=no-tag
add comment=Printer interface=wlan1-main mac-address=C0:B5:D7::xx:xx:xx vlan-mode=no-tag
add comment="Google Home Mini" interface=wlan1-main mac-address=44:07:0B::xx:xx:xx vlan-mode=no-tag
/ip address
add address=10.0.1.1/24 interface=bridge-guest network=10.0.1.0
/ip dhcp-client
add disabled=no interface=bridge-main
/ip dhcp-server network
add address=10.0.1.0/24 dns-server=1.1.1.1,1.0.0.1 gateway=10.0.1.1
/ip firewall nat
add action=masquerade chain=srcnat out-interface=bridge-main src-address=10.0.1.0/24
/ip route rule
add action=unreachable dst-address=10.0.1.0/24 src-address=10.0.0.0/24
add action=unreachable dst-address=10.0.0.0/24 src-address=10.0.1.0/24
/ip service
set telnet disabled=yes
set ftp disabled=yes
set www address=10.0.0.0/24
set ssh address=10.0.0.0/24
set api disabled=yes
set winbox address=10.0.0.0/24
set api-ssl disabled=yes
/system clock
set time-zone-name=Pacific/Auckland
/system identity
set name=MikroTik_Audience
[admin@MikroTik_Audience] >


https://ibb.co/MRF8S2d


* Tested with the different AC band 867 Mbit/s - no difference

One difference between up and download is power save behavior of the client. Change clients, as someone suggested, or look at the config to see if you can disable it for a test. This can be evaluated through use of packet captures of the 802.11 traffic.

Beware that there are buggy Android phones that in certain countries only use 20mhz in RX and 20/40/80mhz in the TX chain giving slow download speeds and fast uploads.