diff --git a/install/scripts/start-bn.sh b/install/scripts/start-bn.sh
index 4caeb6f2..1541a578 100755
--- a/install/scripts/start-bn.sh
+++ b/install/scripts/start-bn.sh
@@ -72,6 +72,7 @@ if [ "$CC_CLIENT" = "lighthouse" ]; then
         --http-allow-sync-stalled \
         --execution-jwt=/secrets/jwtsecret \
         --always-prefer-builder-payload \
+        --historic-state-cache-size 2 \
         $BN_ADDITIONAL_FLAGS"
 
     # Performance tuning for ARM systems
@@ -223,7 +224,6 @@ if [ "$CC_CLIENT" = "prysm" ]; then
         --eth1-header-req-limit 150 \
         --jwt-secret=/secrets/jwtsecret \
         --api-timeout 600 \
-        --build-block-parallel \
         $BN_ADDITIONAL_FLAGS"
 
     if [ ! -z "$MEV_BOOST_URL" ]; then