Improving Stepping Speed
To improve stepping speed, follow these recommendations
Try avoiding method and field breakpoints.
If the Watch method return values option is enabled in Debug Toolbar | Settings, disable it.
Turn off Alternate view for Collections classes by clearing the Enable alternative view for Collections classes checkbox at the Data Views page of the Debugger settings.
Turn off the 'ToString' mode on the IDE level by clearing the Enable 'toString' object view checkbox on the Data Views page of the Debugger settings.
Simplify the conditions for breakpoints and watchpoints, especially the frequently hit ones.
Use filters (e.g., for class instances).
During the debugging session, switch to a view with fewer elements.