You have to masquerade your network. ip firewall nat add chain=srcnat action=masquerade WRONG!! never, NEVER forget out-interface on NAT rule, it is such an annoying mistake. ip firewall nat add chain=srcnat action=masquerade out-interface=<public_interface> Ah, sorry. I see now that i forgot it. T...

You have to masquerade your network.

Use queues

http://wiki.mikrotik.com/wiki/Manual:Queue

Can you paste your config here?

Try changing from port 22 to something else? What about the other services, do they work?

Use Edit the name of the device in the file.

I dont think you will achieve more than that.

I think you should lower those standards a bit. You will not achieve speed like that with Mikrotik, neither with Ubiquiti.

Maybe with a licensed Microwave link.

Reset wireless config and start over. Make sure you have the latest RouterOS and firmware.

You have to masquerade your network.
If this is already done, paste your code so we can see the config.

Add a drop forward rule between the LANs