AG Grid Performance Optimization Guide

Why AG Grid slows down

Client-side row model with hundreds of thousands of rows blocks the main thread. Custom cell renderers that re-create React roots per cell multiply cost. Unmemoized value getters run on every scroll frame.

Fix strategy

• Switch to SSRM with cursor-based API pagination
• Memoize cell renderers; avoid inline functions in colDefs
• Debounce filter and sort server requests
• Use getRowId for stable row identity
• Load master-detail lazily

Case outcome

We reduced initial render from 15s to 2s for a finance operations grid — see our AG Grid case study.

FAQ