Hi,
Why wifi speed on RB941-2nD is slower then the speed of wifi on my ISP router?
I Tested speed:
ISP roter wifi: Down: 100Mbps Up: 60Mbps
RB941-2nD: Down:20Mbps Up.20Mbps
At the time of the test only my laptop is connected to wifi.

Hi,
Why wifi speed on RB941-2nD is slower then the speed of wifi on my ISP router?
I Tested speed:
ISP roter wifi: Down: 100Mbps Up: 60Mbps
RB941-2nD: Down:20Mbps Up.20Mbps
At the time of the test only my laptop is connected to wifi.

You may want to change Band to “2GHz-G/N”. And in security profiles use only “WPA2” and “aes ccm” (tkip limits throughput).
With this settings is better but not like on ISP router wifi:
40/40
http://forum.mikrotik.com/t/slow-wireless-on-mikrokit-hap-lite/106447/1
Thanks.
I added those settings. Now is little bit better but still not perfect. 50/50
Can I do something more?
What’s the signal strength measured by client device?
Can you run CPU profile to see if CPU is a bottleneck?
How did you choose channel 2442? For 2G, only channel 2412, 2437 and 2462 (1, 6 and 11) are non overlapping. Did you perform an RF scan?
This is Europe with allowed channels 1-13. So (almost) non-overlapping G/N channels are 1, 5, 9 and 13 (B chanels are actually slightly wider than G/N channels).
Indeed channel 7 (2442MHz) is not one of these either …
Also change Antenna Gain from 4 to 2 on that device
Thanks. I change gain from 4 to 2, but I don’t see difference.
Thanks. I changed to 2437Mhz, no difference speed still max 50/50.
Did you set channel width to 40 ?
I don’t have only 40?
I have those 20/40 eC / 20/40 Ce / 20/40 XX.