Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
With 0% schema description coverage, the description must compensate. It does add 'Render width in pixels' and 'Render height in pixels,' clarifying units, but it does not provide ranges, constraints, or parameter coupling, which would be valuable for a render configuration tool.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.