bypass mikrotik router for local ftp sharing

Greetings,
Recently I configured simple basic VLAN setup on Cisco 3750 switch and connect it with Mikrotik Router board using trunk port. VLAN setup is as follows.

Mikrotik Router LAN Port = 10.0.0.0.1/24 [Connected with Cisco 3750 Port 1 , trunk]

Cisco 3750
Port 1 = Trunk, connected with Mikrotik
Port 2 = Vlan10 = 10.1.0.0/24 [User Group 1]
Port 3 = Vlan20 = 10.2.0.0/24 [User Group 2]
Port 3 = Vlan30 = 10.3.0.0/24 [FTP Media Sharing Server 1]
Port 4 = Vlan40 = 10.4.0.0/24 [FTP Media Sharing Server 2]

PPPoE Server is configured on RB & All users internet is working fine via dialing into it. and they are able to ping each other. This part is ok ,

Now the problem is if user starts download heavy files from FTP Media Sharing Server 1/2 , there traffic is passing by mikrotik router which puts load on RB CPU (as the trunk traffic bandwidth reaches in GB which chocks the mikrotik port traffic as well]

Is there any way User Group can access FTP media sharing without going via mikrotik, they could somehow connect with FTP locally by switch port directly?

Look for Cisco Intervlan Routing. It will solve your problem.
Make default gateway of clients to there respective vlan interface ip, and enable ip routing in it. this way client will communicate with each other directly using there local ips.