Hi all:
first of all apologize for my English, I’m from Argentina so I will try my best 
First the structure of my network is something like that:
All connections are wired.
The mikrotik routerOS only does NAT to distribute packets to each server according the game port.
everything was fine for a time but now appears a latency spike problem that is produced every 8-10 seconds approximately and and occurs on both servers so i think that is a problem in the mikrotik or switch.
To discard problem source checked the isp connection and no packet loss appears.
And now the thing that i believe is the problem when look in the connections list every 8-10 seconds approximately arrive multiple connections from the same ip to succesive ports, there is a image when a connection arrived to MT server.
There is an image of a Call of Duty game server that represents the problem with lagometer utility.
This red line appears every 8-10 seconds in all servers runing in linux and in servers runing in windows that are Rfactor Servers at the same time appears a message “synchronizing game”
'd be very grateful if someone can give me a hand with this problem.
Regards
Juan Cruz