Lattepand V1 Performance issue

Hii,

I am using Lattepanda V1 with a 2 GB ram version and I have built an application using Qt creator which can run 1 Modbus - TCP, 1 Modbus - RTU, and 1 - Serial port. The Modbus port is used for Communicating with the slave device and the Serial port is used for communicating with the external controller.

When I run the application it will not run smoothly I found a hanging issue in Lattepanda but on other machines, it will work as expected.

Please suggest optimize methods to get better performance.