The first problem is...
I'm trying to do an anti port scan but this rule only works properly on MT 2.9.xx. The rule blocks the router itself if there is a scan detected. Could you help me with that?
/add action=add-dst-to-address-list address-list=SKANER address-list-timeout=1d chain=input comment="Port scanning detection" disabled=no protocol=tcp psd=21,3s,3,1
The second problem is that my RB112 routers are working so slowly(only via winbox) that want to cry!!! (i have 2x RB 112 on my network with MT 3.13 installed)
GreeetZZ and thank you for your help!

First
Change your action to add-src-to-address-list.

Second
Is the CPU being maxed out?
I have heard disabling/uninstalling unneeded packages may help with your speed issue.

-Louis

No the CPU isn't maxed out. CPU load ~~~30%
The connections to the internet are working fine.
The issue is only "feelable" in MT 3.13.
Thanks for your reply.