Reduce feedback export time below current 10+ minutes

Description: As a user who exports feedback data, I want significantly faster export processing so that I can download and analyze feedback without waiting 10+ minutes. Problem: Feedback exports commonly take more than 10 minutes to generate and only appear for download under Settings > Import/Export once ready. This long wait blocks workflows, delays QA and reporting, and creates friction. Benefit: Reducing export processing time will speed up analysis cycles, decrease idle waiting, and improve overall usability for teams that frequently export feedback data.