Action Playback Speed

Hi there,

i have an issue with actions in Illustrator. I am using a script with a app.doScript() method to create custom files. Unfortunately there is a problem with the playback speed of the action. If the playback speed is set to "Accelerated" as it is by default i often get the prompt that the steps i want to take in the actions are unavailable, so the action can't be fullfiled propperly. If I change the playback speed in the action setting to "Step by Step" ieverythings works fine, though it takes longer to complete. The problem is, Illustrator does not save the playback speed setting after restart.

Is there a way to somehow make sure that the action will run on the Accelerated playback speed or set the playback speed permanently to Step by Step in the settings or in the script before running the doScript() method? 

Thank you in advance!