How to fix "Fixed Point DSP overflow on f28035x". Simulation is giving accurate results but when I interface controller with Typhoon HIL resulting in completely unstable system

Initially, almost all of the elements are overflowing and then I adjusted one by one as per the results shown on fixed point range check. HIL results are completely diverging though after fixing default data types.

Do you think I have to upgrade to a new controller with more memory?
Your suggestions would be appreciated!