When a query in Automation Studio runs slowly, breaking the work into smaller, simpler steps often yields the best performance. Splitting the workload into component queries that execute cleanly allows each step to process a manageable amount of data, stay within processing limits, and complete reliably. By running successive, focused queries and writing intermediate results to staging data extensions, you can filter, join, and aggregate incrementally and optimize each part. This also makes errors easier to diagnose and lets you reuse intermediate results rather than reprocessing everything from scratch. Once the components succeed, you can produce the final dataset from the staged outputs if needed. Raising a timeout only hides the underlying inefficiency and can still fail or cause unnecessary delays. Adding more data extensions into the same query increases complexity and data movement, often hurting performance. Fetching all data by removing filters defeats the purpose and typically blows up processing time and resources.