Open main settings dialog in Circuit Tool bar.
There are 3 tabs:
These setting need an application restart.
Speed %: Target simulation speed in percentage of real time.
Steps per Second: Another way to set simulation speed.
Max Iterations: Number of maximum iterations for Non Linear loop (0 for no limit).
Reactive Step: Update step for reactive components.
Slope Steps: Number of steps for Output Pins rising/falling edges (0 for disabled).