diff --git a/src/main/java/it/cavallium/dbengine/database/disk/LLTempLMDBEnv.java b/src/main/java/it/cavallium/dbengine/database/disk/LLTempLMDBEnv.java
index 87d5dd7..20afc36 100644
--- a/src/main/java/it/cavallium/dbengine/database/disk/LLTempLMDBEnv.java
+++ b/src/main/java/it/cavallium/dbengine/database/disk/LLTempLMDBEnv.java
@@ -30,7 +30,7 @@ public class LLTempLMDBEnv implements Closeable {
 				.setMapSize(TWENTY_GIBIBYTES)
 				.setMaxDbs(MAX_DATABASES);
 		//env = envBuilder.open(tempDirectory.toFile(), MDB_NOLOCK, MDB_NOSYNC, MDB_NOTLS, MDB_NORDAHEAD, MDB_WRITEMAP);
-		env = envBuilder.open(tempDirectory.toFile(), MDB_NOTLS, MDB_WRITEMAP, MDB_NORDAHEAD);
+		env = envBuilder.open(tempDirectory.toFile(), MDB_NOTLS, MDB_NOSYNC, MDB_NORDAHEAD, MDB_NOMETASYNC);
 	}
 
 	public Env<ByteBuf> getEnv() {
diff --git a/src/main/java/it/cavallium/dbengine/lucene/LMDBArray.java b/src/main/java/it/cavallium/dbengine/lucene/LMDBArray.java
index 03e7638..df0c240 100644
--- a/src/main/java/it/cavallium/dbengine/lucene/LMDBArray.java
+++ b/src/main/java/it/cavallium/dbengine/lucene/LMDBArray.java
@@ -18,7 +18,7 @@ import org.lmdbjava.Txn;
 public class LMDBArray<V> implements IArray<V>, Closeable {
 
 	private static final boolean FORCE_SYNC = false;
-	private static final boolean FORCE_THREAD_LOCAL = true;
+	private static final boolean DONT_MERGE_TXNS = true;
 
 	private static final AtomicLong NEXT_LMDB_ARRAY_ID = new AtomicLong(0);
 
@@ -43,7 +43,7 @@ public class LMDBArray<V> implements IArray<V>, Closeable {
 		this.defaultValue = defaultValue;
 		
 		this.writing = true;
-		if (FORCE_THREAD_LOCAL) {
+		if (DONT_MERGE_TXNS) {
 			this.rwTxn = null;
 		} else {
 			this.rwTxn = this.env.txnWrite();
@@ -91,7 +91,7 @@ public class LMDBArray<V> implements IArray<V>, Closeable {
 	}
 
 	private void endMode() {
-		if (FORCE_THREAD_LOCAL) {
+		if (DONT_MERGE_TXNS) {
 			writing = true;
 			if (readTxn != null) {
 				readTxn.commit();
diff --git a/src/main/java/it/cavallium/dbengine/lucene/LMDBPriorityQueue.java b/src/main/java/it/cavallium/dbengine/lucene/LMDBPriorityQueue.java
index 7cc9d67..c5e2b1d 100644
--- a/src/main/java/it/cavallium/dbengine/lucene/LMDBPriorityQueue.java
+++ b/src/main/java/it/cavallium/dbengine/lucene/LMDBPriorityQueue.java
@@ -28,7 +28,7 @@ import reactor.util.function.Tuples;
 public class LMDBPriorityQueue<T> implements PriorityQueue<T>, Reversable<ReversableResourceIterable<T>>, ReversableResourceIterable<T> {
 
 	private static final boolean FORCE_SYNC = false;
-	private static final boolean FORCE_THREAD_LOCAL = true;
+	private static final boolean DONT_MERGE_TXNS = true;
 
 	private static final AtomicLong NEXT_LMDB_QUEUE_ID = new AtomicLong(0);
 	private static final AtomicLong NEXT_ITEM_UID = new AtomicLong(0);
@@ -56,7 +56,7 @@ public class LMDBPriorityQueue<T> implements PriorityQueue<T>, Reversable<Revers
 		
 		this.writing = true;
 		this.iterating = false;
-		if (FORCE_THREAD_LOCAL) {
+		if (DONT_MERGE_TXNS) {
 			this.rwTxn = null;
 		} else {
 			this.rwTxn = this.env.txnWrite();
@@ -129,7 +129,7 @@ public class LMDBPriorityQueue<T> implements PriorityQueue<T>, Reversable<Revers
 	}
 
 	private void endMode() {
-		if (FORCE_THREAD_LOCAL) {
+		if (DONT_MERGE_TXNS) {
 			if (cur != null) {
 				cur.close();
 				cur = null;
diff --git a/src/main/java/it/cavallium/dbengine/lucene/searcher/AdaptiveMultiSearcher.java b/src/main/java/it/cavallium/dbengine/lucene/searcher/AdaptiveMultiSearcher.java
index 74269d2..176f616 100644
--- a/src/main/java/it/cavallium/dbengine/lucene/searcher/AdaptiveMultiSearcher.java
+++ b/src/main/java/it/cavallium/dbengine/lucene/searcher/AdaptiveMultiSearcher.java
@@ -64,8 +64,14 @@ public class AdaptiveMultiSearcher implements MultiSearcher {
 					return scoredPaged.collectMulti(indexSearchersMono, queryParams, keyFieldName, transformer);
 				} else {
 					if ((queryParams.isSorted() && !queryParams.isSortedByScore())) {
+						if (queryParams.limitLong() < MAX_IN_MEMORY_SIZE) {
+							throw new UnsupportedOperationException("Allowed limit is " + MAX_IN_MEMORY_SIZE + " or greater");
+						}
 						return sortedScoredFull.collectMulti(indexSearchersMono, queryParams, keyFieldName, transformer);
 					} else {
+						if (queryParams.limitLong() < MAX_IN_MEMORY_SIZE) {
+							throw new UnsupportedOperationException("Allowed limit is " + MAX_IN_MEMORY_SIZE + " or greater");
+						}
 						return unsortedScoredFull.collectMulti(indexSearchersMono, queryParams, keyFieldName, transformer);
 					}
 				}
diff --git a/src/main/java/it/cavallium/dbengine/lucene/searcher/SortedScoredFullMultiSearcher.java b/src/main/java/it/cavallium/dbengine/lucene/searcher/SortedScoredFullMultiSearcher.java
index 3e1063c..0625898 100644
--- a/src/main/java/it/cavallium/dbengine/lucene/searcher/SortedScoredFullMultiSearcher.java
+++ b/src/main/java/it/cavallium/dbengine/lucene/searcher/SortedScoredFullMultiSearcher.java
@@ -65,9 +65,6 @@ public class SortedScoredFullMultiSearcher implements MultiSearcher {
 				.fromCallable(() -> {
 					LLUtils.ensureBlocking();
 					var totalHitsThreshold = queryParams.getTotalHitsThresholdLong();
-					if (queryParams.limitLong() < MAX_IN_MEMORY_SIZE) {
-						throw new UnsupportedOperationException("Allowed limit is " + MAX_IN_MEMORY_SIZE + " or greater");
-					}
 					return LMDBFullFieldDocCollector.createSharedManager(env, queryParams.sort(), queryParams.limitInt(),
 							totalHitsThreshold);
 				})
diff --git a/src/main/java/it/cavallium/dbengine/lucene/searcher/UnsortedScoredFullMultiSearcher.java b/src/main/java/it/cavallium/dbengine/lucene/searcher/UnsortedScoredFullMultiSearcher.java
index 5093774..88958df 100644
--- a/src/main/java/it/cavallium/dbengine/lucene/searcher/UnsortedScoredFullMultiSearcher.java
+++ b/src/main/java/it/cavallium/dbengine/lucene/searcher/UnsortedScoredFullMultiSearcher.java
@@ -69,9 +69,6 @@ public class UnsortedScoredFullMultiSearcher implements MultiSearcher {
 		return Mono
 				.fromCallable(() -> {
 					LLUtils.ensureBlocking();
-					if (queryParams.limitLong() < MAX_IN_MEMORY_SIZE) {
-						throw new UnsupportedOperationException("Allowed limit is " + MAX_IN_MEMORY_SIZE + " or greater");
-					}
 					var totalHitsThreshold = queryParams.getTotalHitsThresholdLong();
 					return LMDBFullScoreDocCollector.createSharedManager(env, queryParams.limitLong(), totalHitsThreshold);
 				})