1. Restate: The Dashboard component re-renders continuously, pegging CPU, whenever filters.dateRange is set. 2. Candidate causes, ranked: (a) useEffect depends on the filters object itself, which is a new object reference every render - supported by filters being rebuilt inline in the parent as {...defaultFilters, ...override}. (b) A child component calls setFilters inside its own render body instead of an event handler. (c) useMemo for filteredRows is missing a dependency, causing a state update loop through a subscribed store. 3. Tests: (a) log filters === prevFilters each render - false every time confirms a new reference. (b) grep for setFilters( outside handlers and effects. (c) check the store subscription's dependency array. 4. Most likely: (a) - the log shows filters is a new object every render even when the underlying values are unchanged, and the parent builds it inline on every render. 5. Fix: memoize filters in the parent with useMemo keyed on the primitive values (start, end), not the wrapper object, or change the effect's dependency to the primitive values directly. 6. Ruled out (c): the store subscription's dependency array was already correct on inspection.