You can get a playback setting by inserting a step in a visual test that returns the current value of an option and stores the value in a local variable. You can then use the local variable in verification or logic steps or to reset a playback setting value back to its original value.
Silk Test Workbench updates the label of the Get playback setting step as follows:
Get playback setting '[playback setting name]' and set to '[variable name]'