Why are the effects of the same program on different computers very different?

MyProgramIt can be divided into the lower computer and the upper computer. The lower computer is cypress with USB 68013 single-chip microcomputer, and the upper computer is MFC. The lower computer transmits the data collected below to the upper computer, and the upper computer processes the data obtained. The program of the lower computer has been placed in the EEPROM, and can directly communicate with the upper computer when running the upper computer software. Now, the upper computer is set to a static link library to generate executable files, which are then transferred to other computers for running, the results are poor or even ineffective. I used a touch screen application to operate the image after obtaining the touch coordinate, such as dragging and scaling the image, the effects on my programming computer are very sensitive, but the effects on other computers are very poor or even unresponsive. In the end, the latency is reduced by dragging and scaling, I found that latency has a huge impact on my applications on different computers. I would like to ask you why this problem happened, whether the same program runs on different computers is related to its CPU or not. Thank you very much for your answers.