- 1 actor on 2 thread = you are probably doing it wrong.
As for the rest, whether or not they are used in communication systems and whether or not they are cpu-bound, consider there are and run the handle on a separate loop from the main message dispatching. Otherwise you _will_ delay messaging if handles don't await.
- 2 actors on 1 thread = OK
- 1 actor on 2 thread = you are probably doing it wrong.
As for the rest, whether or not they are used in communication systems and whether or not they are cpu-bound, consider there are and run the handle on a separate loop from the main message dispatching. Otherwise you _will_ delay messaging if handles don't await.