I understand that wifi is always going to be less then wired, but I think this is an issue. I if I am wired, I get 30mps down, wireless is about 7mbps down. And with other wifi router (Intelbras WIN 300) I can get 30mbps in the wireless conection. I have an RB751U and it basically has the default settings out of the box. the only thing I did was change the wifi name and added a password. Keep in mind, I know nothing about this kind of stuff, just hoping someone can point me in the right direction. Thank you.
Good day
Use 20mhz only and wpa2 only
single chain through walls hap lite i easily get 40mpbs
Double chain i get 70mpbs
export config then we will help
Hi.
Thank you. I will try that and export config tonight.
Practically same post was answered just couple of days ago: http://forum.mikrotik.com/t/wifi-is-slower-then-wired-by-a-lot/121560/3
Do not tell me that it is just coincidence, that first sentence and last sentence are totally same including grammar mistake.
Can you tell us what are you trying to achieve by sending same post again?
Hi.
The reason for that is my difficulty to express myself in english. Before I ask my question I did a research on the forum, and saw a question that was almost the same problem, but a little different and the answers didn't help me. In the computer I was using didn't have a "Spell Checker", so I changed some things and used the part of the text that explained my problem.
I'm sorry if I was wrong in doing that, but I am still having the problem with my routerboard. If someone can help me I will be very grateful.
Exported config: # jul/24/2018 18:52:01 by RouterOS 6.27
software id = NIGM-4P0H
/interface bridge
add admin-mac=D4:CA:6D:D4:0D:35 auto-mac=no name=bridge-local
/interface wireless
set [ find default-name=wlan1 ] band=2ghz-b/g/n channel-width=
20/40mhz-ht-above disabled=no distance=indoors frequency=auto
ht-supported-mcs="mcs-0,mcs-1,mcs-2,mcs-3,mcs-4,mcs-5,mcs-6,mcs-7,mcs-8,mc
s-9,mcs-10,mcs-11,mcs-12,mcs-13,mcs-14,mcs-15" l2mtu=2290 mode=ap-bridge
ssid=TL2 wireless-protocol=802.11
/interface ethernet
set [ find default-name=ether1 ] name=ether1-gateway
set [ find default-name=ether2 ] name=ether2-master-local
set [ find default-name=ether3 ] master-port=ether2-master-local name=
ether3-slave-local
set [ find default-name=ether4 ] master-port=ether2-master-local name=
ether4-slave-local
set [ find default-name=ether5 ] master-port=ether2-master-local name=
ether5-slave-local
/ip neighbor discovery
set ether1-gateway discover=no
/interface wireless security-profiles
set [ find default=yes ] authentication-types=wpa2-psk mode=dynamic-keys
wpa2-pre-shared-key=697877-m
/ip pool
add name=default-dhcp ranges=192.168.88.10-192.168.88.254
/ip dhcp-server
add address-pool=default-dhcp disabled=no interface=bridge-local name=default
/interface bridge port
add bridge=bridge-local interface=ether2-master-local
add bridge=bridge-local interface=wlan1
/ip address
add address=192.168.88.1/24 comment="default configuration" interface=
bridge-local network=192.168.88.0
/ip dhcp-client
add comment="default configuration" dhcp-options=hostname,clientid disabled=
no interface=ether1-gateway
/ip dhcp-server network
add address=192.168.88.0/24 comment="default configuration" gateway=
192.168.88.1
/ip dns
set allow-remote-requests=yes
/ip dns static
add address=192.168.88.1 name=router
/ip firewall filter
add chain=input comment="default configuration" protocol=icmp
add chain=input comment="default configuration" connection-state=
established,related
add action=drop chain=input comment="default configuration" disabled=yes
in-interface=ether1-gateway
add chain=forward comment="default configuration" connection-state=
established,related
add action=drop chain=forward comment="default configuration"
connection-state=invalid
add action=drop chain=forward comment="default configuration"
connection-nat-state=!dstnat connection-state=new in-interface=
ether1-gateway
/ip firewall nat
add action=masquerade chain=srcnat comment="default configuration"
out-interface=ether1-gateway
/system clock
set time-zone-name=America/Sao_Paulo
/system leds
set 0 interface=wlan1
/tool mac-server
set [ find default=yes ] disabled=yes
add interface=ether2-master-local
add interface=ether3-slave-local
add interface=ether4-slave-local
add interface=ether5-slave-local
add interface=wlan1
add interface=bridge-local
/tool mac-server mac-winbox
set [ find default=yes ] disabled=yes
add interface=ether2-master-local
add interface=ether3-slave-local
add interface=ether4-slave-local
add interface=ether5-slave-local
add interface=wlan1
add interface=bridge-local
That’s weirdest thing I have ever seen 
My apologies. It really looked like some bot or person trying to get attention and now I feel like prick.
Anyway, your conditions are similar but not exactly same. You will be limited to 100Mbps as well (RB751U has only 10/100 ports) but that seems not an issue as you are saying that even wired connection is just 30Mbps and your main concern is wifi getting only 7Mbps
First thing you need to do is update your RouterOS. You are using 6.27 which is very old and vulnerable. There is high risk of your device being compromised.
Short and simple - there are two options and both have some advantages:
a) update to 6.40.8 (bugfix channel) - this is easier for update as your configuration can stay same as it is now. However, it will not give you newest features (which are maybe not that important for you)
b) update to 6.42.1 or newer (current channel) - this will give you newest set of features but you will have to change your config a bit. (you will have to remove “master-port” from eth3-5 and add them manually to bridge). This may obviously cause loss of connection if you are connected through one of these ports - you need to connect either with wifi or with Ether2 for this process
Now, once you are updated we may start looking for reason behind your slow network. In the config you sent, I actually don’t see any mistake. You have 2GHz b/g/n with 20/40-Ce channel width, you have wpa2 with AES (no TKIP which slows things down).
I suspect only two things:
- cpu unable to handle faster speeds (your model is really old) - you can find out with command: /tool profile . Once your profiling is up and running, test your speed and look at the terminal to see if total usage is getting high or not.
- incorrect wifi channel - your current setting is “auto”. That means when you power up your router, it will scan wifi for few seconds and locks into least used channel. However, later, this can change so you might have some interference slowing you down.
You can detect this with following command /interface wireless snooper snoop wlan1 this will show you list of stations/networks/frequencies (you can switch them with pressing S/N/F). It is better to leave it working for some time to detect more devices. and then copy each (S/N/F) page.
Another useful command is /interface wireless registration-table print stats which will show you how your wifi clients are doing. Most important data are signal-strength, signal-to-noise and ccq - higher is better.
Based on this, you can find out if you need to move to some different channel etc…
Let us know with results 
Hopefully me or someone else will figure out what is wrong, based on your results.
Ok, thank you. Soon I will do the update and do the tests.