Simulation time is different from real World in external mode c2000 embedded dsp control time to run induction motor

Hello Antonin, I am using extrnal mode control in c2000 embedded simulink. I constructed sine pwm to run motor with 50hz frequency. In build and deployment mode motor running with rated speed but in external mode it is running less than half of rated speed with same module I. E 50hz frequency. What I observed is in external mode 30sec simulation time takes to 60 sec real time. Thats why even though i gave 50hz reference sine wave it is running at 25hz frequency in real time world. How to synchronize simulation time with real time during external mode. Thanks Regard