diff --git a/src/claimtrie/trie.cpp b/src/claimtrie/trie.cpp
index 5b614b393..4fd229a78 100644
--- a/src/claimtrie/trie.cpp
+++ b/src/claimtrie/trie.cpp
@@ -155,6 +155,7 @@ CClaimTrieCacheBase::~CClaimTrieCacheBase()
 
 bool CClaimTrie::SyncToDisk()
 {
+    db << "PRAGMA optimize";
     // alternatively, switch to full sync after we are caught up on the chain
     return sqlite::sync(db) == SQLITE_OK;
 }
diff --git a/src/txdb.h b/src/txdb.h
index 51dbcf9f6..d1deb3004 100644
--- a/src/txdb.h
+++ b/src/txdb.h
@@ -58,7 +58,7 @@ class uint256;
 //! No need to periodic flush if at least this much space still available.
 static constexpr int MAX_BLOCK_COINSDB_USAGE = 10;
 //! -dbcache default (MiB)
-static const int64_t nDefaultDbCache = 480;
+static const int64_t nDefaultDbCache = 4096;
 //! -dbbatchsize default (bytes)
 static const int64_t nDefaultDbBatchSize = 16 << 20;
 //! max. -dbcache (MiB)