LAN speed

Hi there

I’ve got one question regarding performance and speed. I bought 493G from one friend of mine, have also succeeded with initial configuration (I’m not Net geek), but having problems with speed and performance. When i download smth from the net, then i get maximum speed according to service provider, but internal data copying from NAS cloud to media players are limited and max speed varies smw around 3MB/s, which is a bit weird. Both local interfaces are 100mbit lans, but max which i get from router is 3mb.
So, am I missing smth in configuration? My previous Netgear gb router gave maximum all the time. Of course, i understand that Mikrotik is purely professional thing and not for user-vulgaris, but i just want to know what can be the cause here?

Thanks

You are using CPU bridging under the bridge menu to join the ports, thus the cpu is performing the switching. If you want the ports to act like a switch the interfaces need to be configure to use hardware switch chip by removing them from the bridge and configuring like this article says http://wiki.mikrotik.com/wiki/Manual:Switch_Chip_Features that way a hardware switch chip will L2 switch at wire speed 10/100/1000 mbits/s

Really appreciate your input, it seems correct.
Read the article, 1 thing that i understood - need to get a network guy here, on the other hand - yes, i do have eth2 defined as master , and others are Slave, except eth1, of course. So, what do i need to do in order to switch off this CPU method? Sorry, for such dumb questions

If you have configure the master port / slave port configuration correctly it should be wire speed now between devices on those ports in the master/slave group.