Is it a mod compatibility issue?

No

Minecraft version

1.19.2

Describe the issue

The server is generating chunks 2 dimensions below the player when the player is on the surface, resulting in slow generation.

Here are my config settings:

{
"check_the_wiki_for_more_information": "https://qouteall.fun/immptl/wiki/Config-Options",
"enableWarning": true,
"enableMirrorCreation": false,
"maxPortalLayer": 1,
"sharedBlockMeshBufferOptimization": true,
"lagAttackProof": true,
"portalRenderLimit": 128,
"indirectLoadingRadiusCap": 4,
"enableCrossPortalSound": true,
"compatibilityRenderMode": false,
"doCheckGlError": false,
"portalSearchingRange": 32,
"renderYourselfInPortal": true,
"serverSideNormalChunkLoading": false,
"teleportationDebug": false,
"correctCrossPortalEntityRendering": true,
"looseMovementCheck": false,
"pureMirror": false,
"enableAlternateDimensions": true,
"reducedPortalRendering": false,
"visibilityPrediction": true,
"netherPortalOverlay": false,
"scaleLimit": 30,
"easeCreativePermission": true,
"easeCommandStickPermission": false,
"enableDatapackPortalGen": true,
"enableCrossPortalView": true,
"enableClippingMechanism": true,
"enableDepthClampForPortalRendering": false,
"lightVanillaNetherPortalWhenCrouching": false,
"enableNetherPortalEffect": true,
"enableClientPerformanceAdjustment": true,
"enableServerPerformanceAdjustment": true,
"checkModInfoFromInternet": true,
"enableUpdateNotification": true,
"netherPortalMode": "disabled"
}