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I’ve seen people do it, but I agree with your concern. tROAS is fundamentally an efficiency lever, not really a pacing tool.
Small adjustments can help control spend around the edges, but once targets get unrealistic you start teaching the algorithm to chase a version of performance that may not actually exist in the account. That gets messy fast in segmented or bucketed setups.
Personally I’d rather use budgets for budget control and tROAS for actual efficiency goals, then only blend the two lightly when needed.
