Investigate and improve performance of frame capturing #5155
Description
Description
We need to investigate potential reasons for performance drops even with the experimentalViewRenderer enabled. This also seems to visible on high-end devices such as an iPhone 14 Pro or iPhone 16 Pro Max.
Project to reproduce: https://github.com/AlirezaHadjar/sentry-session-replay-bug
Based on the report of this comment in #4000.
Potential ideas to start off:
- Use instruments and CPU profiling to find slow methods
- Find alternative render methods to the current view renderer (i.e. finding a way to get data directly from GPU).
- Investigate if color averaging is slow
Additional TODOs:
- Update the Performance Overhead Documentation