Preventing Scheduled Process Models from kicking off multiple instances after system downtime?

Does anyone have any recommended approaches to preventing a process model that runs on a recurring schedule from kicking off multiple instances after the system is down when it was scheduled to run? We have some processes that run nightly, but can create race-conditions if multiple instances try to run simultaneously.

Thinking about maybe putting in an "Advanced Options" Expression to force it to actually be the scheduled start time (or at least close), and just bypassing running until the next scheduled time that Appian is actually up on the server. Would that do the trick?

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