I use "forward" now but it seem like the router rule doesn't work. I see the Byte and Package doesn't counted.
Can you make small drawing ? Reading your post is very weird.
You say PC's & servers are on the SAME IP-network, but perhaps you made a typo in writing. All the IP's below are in the same IP-network.
Are PC1 / PC2 *directly* attached to the Mikrotik physical ports ? Are there any switches ?
Because depending on the way you have wired up
... it can be very possible that no traffic passes through the Mikrotik if PC1 or PC2 wants to talk to DHCP/DNS-server....so you will not see anything...
My Windows DHCP/DNS/AD Server is in LAN1: 192.168.0.3/24
Mikrotik is for internet is in LAN1: 192.168.0.1/24
(I don't use Mikrotik as DHCP or DNS, instead I use Microsoft Server for this job)