Possibly more a question/request for the Devs. I’ve increased the preview speeds and accelerations to the highest settings possible in the Additional Settings tab in device settings. A job in preview is indicating 26 minutes run time, but the job only takes 12 minutes. Can the global speed adjustment be made to allow adjustments over 100%? Easiest way to get accurate times for Galvos would be to allow over 100% to bring the preview/simulation time much closer to real job time.
Can you show us a screenshot of your preview settings tab in Device Settings?
You can do a bulk override of speeds with the Global Speed Scale value

