diff --git a/Setting-up-the-config-file.md b/Setting-up-the-config-file.md
index aac1e13..f7d90d2 100644
--- a/Setting-up-the-config-file.md
+++ b/Setting-up-the-config-file.md
@@ -90,7 +90,7 @@ The settings-branch is quite extensive, and besides the `world`-node, it is basi
 * `detonate-damage: [true|false]` - If false, players will not take damage from the Creeper detonations (but they will still take damage from normal Creeper explosions). Requires detonate-creepers: true!
 * `lightning: [true|false]` - If true, every spawnpoint will be struck by lightning (no damage) on special waves.
 * `auto-equip-armor: [true|false]` - If true, armor pieces will automatically be equipped upon class selection. Note that this does not work if a class has more than 1 of an armor piece type.
-* `force-restore: [true|false]` - If true, the arena region is saved on arena start, and rebuilt on arena end. This is useful if the arena is encased in Obsidian, and server hosts want a destructible arena.
+* `force-restore: [true|false]` - If true, the arena region is saved on arena start, and rebuilt on arena end. This is useful if the arena is encased in Obsidian, and server hosts want a destructible arena. Note that with a large arena region, the server will "lag" for a few seconds on arena end and arena start. This is because the region is saved to the harddrive.
 * `require-empty-inventory: [true|false]` - If false, players' inventories will be saved upon joining, and restored upon death/leaving.
 * `hellhounds: [true|false]` - If true, all pet wolves in the arena will be in flames! This has no actual function, and is purely for the cool-factor. Also useful for distinguishing enemy wolves and pet wolves.
 * `pvp-enabled: [true|false]` - If true, players can damage each other in the arena.