diff --git a/src/core/healthCheck.ts b/src/core/healthCheck.ts
index fd54f48..5676b31 100644
--- a/src/core/healthCheck.ts
+++ b/src/core/healthCheck.ts
@@ -13,8 +13,9 @@ const HEALTH_CHECK_CONFIG = {
 	CHECK_INTERVAL_MS: 2000,
 	// Maximum time allowed between slot updates
 	MAX_SLOT_STALENESS_MS: 5000,
-	// Minimum expected slot advancement rate (slots slower than 1 per second is problematic)
-	MIN_SLOT_RATE: 1,
+	// Minimum expected slot advancement rate. Sometimes usermap is used for slot source, so the slot rate
+	// may be much lower than 2 per sec. 0.03 is 1 slot per 33s
+	MIN_SLOT_RATE: 0.03,
 } as const;
 
 /**