i have a serious problem with my network ..i can bet you all configurations are right. i have upgraded the router version to a higher one and the problem still persists..
the most significant problem is that
the network runs slow when am behind the routeros.but picks up fast when i take it off the routeros. i dont know if its a problem with the X86 machine am using or there is something else wrong somewhere..i would kindly need some tips on a likely solution to the problem.thanks

It would be great to get more detailed information about the problem.
Is it slow on every application? How is slowness measured? Do you have any configuration at /queue?