In Visual Studio, make sure you have unchecked “Just My Code” option in Debugging options:
When you debug a HOOPS Visualize HPS powered app, please note it is multithreaded. HOOPS Visualize works with different thread, you can access from Visual Studio:
Browse the thread to find the different internal call in HOOPS Visualize:
HOOPS Visualize HPS source code is not provided, so you will only access to the call stack