Bypass Full Speed Local Transfer File - MikroTik Script RouterOS
The case uses the RB750GR3 proxy
Port 1 for LAN 1, 1Gbps
Port 2 for LAN 2, 1Gbps
Gbps IP Local: 192.168.10.1 (possibly ftp or web server)

When copying files from LAN1 to LAN2, why is the maximum bandwidth only 150 mega bits / second or 15MB / s. Even though the proxy CPU resource is only 36% used, how do you get full speed and maximize the bandwidth?

The method is very easy: in a simple queue or queue tree, create a queue, for example FULL-SPEED, then use SFQ (Stochastic Fairness Queuing) in queue type.

/queue type 
add name=Full-Speed kind=sfq
/queue simple
add name="FULL-SPEED" queue=Full-Speed/Full-Speed target=192.168.10.0/24 total-queue=default
This method will be even more optimal if the Fasttrack function is activated.

/ip firewall filter 
add chain=forward action=fasttrack-connection connection-state=established,related
add chain=forward action=accept connection-state=established,related