AGI becomes too slow with large trace files (450MB for example)

[batesj]

Environment information:

• AGI version: Version 2023-3.3.0:55d96149deb160d0214d73d0e70cb5c799d97416
• Host OS: Windows
  If tracing on Android:
• Device model:
• Android Version:

Bug description
Loading a 450MB trace takes minutes. Scrolling or zooming then takes minutes more. Each change to the view seems to take minutes. This is on a fast PC with 72 hw threads and 196GB RAM.

Reproduction steps
Load a typical Android trace (with both atrace events and ftrace cpusched data) of size 450MB.