Plugin Settings

Project Settings → Plugins → Host Migration, stored in DefaultGame.ini under [/Script/HostMigrationCore.HostMigrationSettings].

The most important ones:

Setting	Default	What it does
Hand Over On Window Close	on	Host closing the window hands the match over first instead of counting as a crash.
Adapter Class	Null	The online backend. Steam Lobby for Steam.
Client Wait Map	none	Empty map clients wait in. Strongly recommended.
Snapshot Interval	3 s	How often the host sends state. Lower = less lost progress, more traffic.
Reconnect Grace Period	30 s	How long the new host waits for previous players.
Inactive Player Timeout	300 s	How long a player who left keeps their state for a rejoin.
Leaving Player Pawn	Keep In World	What happens to the pawn of a player who leaves.
Pause During Grace Period	on	Pause while players reconnect.
Show Migration Overlay	on	Show a "reconnecting" screen during a migration.

All settings are listed in the Settings Reference.