speecher generator hanging

[sentinelweb]

Looks like the swing UI thread randonly hangs :/

Things to try:

• Find better tools to looks at threads - some thread must be humg somewhere
  • Visual VM. looks great https://visualvm.github.io/download.html
• override the schedulers, try to wrap all the runnables in a wrapper and check they all finish.
• wrap action0 in the playr rx chains - check they all finish
• try coroutines (extreme - lots of work) - maybe just for player

[sentinelweb]

consider using kotlin flow - has a swing dispatcher
https://github.com/Kotlin/kotlinx.coroutines/blob/master/ui/README.md