Index: src/Deltares.DSoilModel.Tests/SosSoilLayer1DTest.cs
===================================================================
diff -u -r109 -r110
--- src/Deltares.DSoilModel.Tests/SosSoilLayer1DTest.cs	(.../SosSoilLayer1DTest.cs)	(revision 109)
+++ src/Deltares.DSoilModel.Tests/SosSoilLayer1DTest.cs	(.../SosSoilLayer1DTest.cs)	(revision 110)
@@ -128,8 +128,6 @@
         }
 
         [Test]
-        [Category(Categories.Slow)]
-        [Category(Categories.Performance)]
         public void PerformanceOfReadingWtiSosData()
         {
             // purpose of this test was to measure and improve the database performance while working on issue DSB-264
Index: src/Deltares.DSoilModel.Tests/DSoilModelIOTest.cs
===================================================================
diff -u -r14 -r110
--- src/Deltares.DSoilModel.Tests/DSoilModelIOTest.cs	(.../DSoilModelIOTest.cs)	(revision 14)
+++ src/Deltares.DSoilModel.Tests/DSoilModelIOTest.cs	(.../DSoilModelIOTest.cs)	(revision 110)
@@ -81,7 +81,6 @@
         }
 
         [Test]
-        [Category(Categories.Slow)]
         public void DamDefxImporterMustRefuseIncompleteSegments()
         {
             // setup, using a copy of DAM tutorial Design with the Geometries folder deleted.
@@ -106,7 +105,6 @@
         ///     Test import of defx file from Dam Tutorial design
         /// </summary>
         [Test]
-        [Category(Categories.Slow)]
         public void ImportDamSegmentsFromDefxFile()
         {
             // setup
@@ -135,7 +133,6 @@
         }
 
         [Test]
-        [Category(Categories.Slow)]
         public void ImportDuplicateMdbDoesNotCreateDuplicateSoils()
         {
             string mdbFile = Path.Combine(@"..\..\..\data", "D-Soil Model", "Groot Salland.mdb");