Respawn of Monsters

I'm wondering when Monsters are respawning.

I guess, when I leave an map and reenter it after a few hours there are all alive again?
If so, I personally find this not pleasant.
Best would be, if I can turn the "respawn" option on and off.

Regards
Christian

Monsters dont respawn in a map

You portals will close if you leave a map for "hours". Instance timeout is 8-15 minutes.

Zones during the campaign reset and unload after 8 to 15 minutes, depending on the zone. The only exception here being twilight strand, the very first zone you cannot re-enter after leaving, which resets after 90 seconds.

Endgame maps take significantly longer to time out with their portals simply disappearing.

Unless there are necromancers in the vicinity or you are in a map with the "restless dead" modifier (only appears on valdo maps and acton's nightmare unique map), monsters don't respawn in the same instance.