Usually within an hour or two, but sometimes within the first few minutes. After the crash, the springboard is displayed, and a crash log is available.
When I play this same playlist using the web app (Safari), the app eventually fails in some way, but usually it takes a couple of days of continuous playback before this happens.
I have attached 32 crash logs from the iPhone app.
Tested on two iPhones:
5s, iOS 12.4.8
SE (2016), iOS 13.6.1
Plex app 7.5.1
Server:
PMS 1.20.1.3252
macOS 10.11.6
I see various other threads with similar reports, not sure if this should be merged with another thread.
Plex crash logs.zip (857.9 KB)