What parameters should be analyzed if there are delays or lags when scrolling a table?

When experiencing delays or lag when scrolling a table in iOS, the following parameters should be analyzed:

• Cell rendering time: how quickly cells are created and configured. Slow configuration, for example due to complex calculations or image loading, can slow down scrolling.
• Asynchronous data and image loading: if images or data are loaded synchronously on the main thread, it causes delays.
• Cell reuse (reuseIdentifier): proper use of reusable cells reduces memory load and speeds up rendering.
• Number and complexity of Auto Layout constraints: overly complex or excessive constraints can slow down layout calculations.
• Volume of data loaded into memory at once: loading too much data at once can cause lag.
• Use of heavy operations in cellForRowAt or willDisplayCell methods: heavy operations should be performed in advance or asynchronously.

For diagnostics, tools like Instruments (Time Profiler, Core Animation) can be used to identify bottlenecks.