I'm glad my idea hast start the soluction that helped you 
Just to be clear this is advanced tweaking not for the normal home user? Y/N and it actually better suited to an upstream router that is not also doing all the DHCP and routing at the network level Y/N
Or is this just insane to ask the MT to do at all??
@ anav
Just to be clear this is advanced tweaking not for the normal home user? Y/N
yes and no.
yes, if you feel you are being blocked by remote server (ie. www) and your internet became deteriorating because the effects of remote end closing your router ports aggressively.
check cmd> netstat -a
see how many connections has that tcp_reset or syn_sent flags.
no, if you don’t feel that way 