SCI between TMS320F28335 and PC

Hi

I'm doing an example in Simulink and I've exported to CCS V6 . Execute a Pulse signal in device sending it by SCI_A to PC

I've used the Serial Comunnication available in: https://es.mathworks.com/help/supportpkg/texasinstrumentsc2000/ug/permanent-magnet-synchronous-motor-field-oriented-control.html but with Baud Rate=115200. I can´t use 5 Mbps (In Device Manager COM port I've max. 921600)

1. Why the data receiving is slow ? It is about Baude rate ?.
2. How Can I increase the speed (original signal period = 1s and in the PC it has 5s ) ?. I'd like to view a real time (RT) behaviour. With 921600 is a bit fast but not RT.

The SCI reference Guide the device support 9.3 Mbps with LSPCLK=SYSTCLKOUT/1

3. What about the 921600 in the Device Manager COM parameters ?.

Regards