diff --git a/src/FilterLists.Services/FilterLists.Services.csproj b/src/FilterLists.Services/FilterLists.Services.csproj
index ab115a047..abacb7ccc 100644
--- a/src/FilterLists.Services/FilterLists.Services.csproj
+++ b/src/FilterLists.Services/FilterLists.Services.csproj
@@ -29,4 +29,8 @@
     <ProjectReference Include="..\FilterLists.Data\FilterLists.Data.csproj" />
   </ItemGroup>
 
+  <ItemGroup>
+    <Folder Include="Extensions\" />
+  </ItemGroup>
+
 </Project>
\ No newline at end of file
diff --git a/src/FilterLists.Services/Snapshot/Snapshot.cs b/src/FilterLists.Services/Snapshot/Snapshot.cs
index 0ae3e1969..066d6e7e4 100644
--- a/src/FilterLists.Services/Snapshot/Snapshot.cs
+++ b/src/FilterLists.Services/Snapshot/Snapshot.cs
@@ -13,7 +13,7 @@ namespace FilterLists.Services.Snapshot
 {
     public class Snapshot
     {
-        private const int BatchSize = 50;
+        private const int BatchSize = 1000;
         private readonly FilterListsDbContext dbContext;
         private readonly FilterListViewUrlDto list;
         private readonly Data.Entities.Snapshot snapEntity;
@@ -104,7 +104,7 @@ private static IEnumerable<string> ParseRawRules(string content)
             var rawRules = content.Split(new[] {"\r\n", "\r", "\n"}, StringSplitOptions.RemoveEmptyEntries);
             for (var i = 0; i < rawRules.Length; i++)
                 rawRules[i] = rawRules[i].LintRawRule();
-            return rawRules.Where(r => r != null);
+            return new HashSet<string>(rawRules.Where(r => r != null));
         }
 
         private IEnumerable<SnapshotBatch> CreateBatches(IEnumerable<string> rawRules) =>
diff --git a/src/FilterLists.Services/Snapshot/SnapshotBatch.cs b/src/FilterLists.Services/Snapshot/SnapshotBatch.cs
index 708b81052..2a3aa10b4 100644
--- a/src/FilterLists.Services/Snapshot/SnapshotBatch.cs
+++ b/src/FilterLists.Services/Snapshot/SnapshotBatch.cs
@@ -13,29 +13,23 @@ public class SnapshotBatch
         private readonly FilterListsDbContext dbContext;
         private readonly IEnumerable<string> rawRules;
         private readonly Data.Entities.Snapshot snapEntity;
-        private IQueryable<Rule> rules;
 
         public SnapshotBatch(FilterListsDbContext dbContext, IEnumerable<string> rawRules,
             Data.Entities.Snapshot snapEntity)
         {
             this.dbContext = dbContext;
-            this.snapEntity = snapEntity;
             this.rawRules = rawRules;
+            this.snapEntity = snapEntity;
         }
 
         public async Task SaveAsync()
-        {
-            AddRules();
-            AddSnapshotRules();
-            await dbContext.SaveChangesAsync();
-        }
-
-        private void AddRules()
         {
             var existingRules = GetExistingRules();
             var newRules = CreateNewRules(existingRules);
-            rules = existingRules.Concat(newRules);
             dbContext.Rules.AddRange(newRules);
+            var rules = existingRules.Concat(newRules);
+            AddSnapshotRules(rules);
+            await dbContext.SaveChangesAsync();
         }
 
         private IQueryable<Rule> GetExistingRules() => dbContext.Rules.Where(r => rawRules.Contains(r.Raw));
@@ -43,7 +37,7 @@ private void AddRules()
         private List<Rule> CreateNewRules(IQueryable<Rule> existingRules) =>
             rawRules.Except(existingRules.Select(r => r.Raw)).Select(r => new Rule {Raw = r}).ToList();
 
-        private void AddSnapshotRules() =>
+        private void AddSnapshotRules(IQueryable<Rule> rules) =>
             snapEntity.AddedSnapshotRules.AddRange(rules.Select(r => new SnapshotRule {Rule = r}));
     }
 }
\ No newline at end of file