diff --git a/build/int.cloudbuild.yaml b/build/int.cloudbuild.yaml
index 62b5facdc..cab7d9029 100644
--- a/build/int.cloudbuild.yaml
+++ b/build/int.cloudbuild.yaml
@@ -14,20 +14,6 @@
 
 timeout: 14400s
 steps:
-- id: prune unchanged directories
-  name: gcr.io/cloud-builders/git
-  entrypoint: bash
-  args:
-    - -c
-    - |
-      git fetch --unshallow
-      git diff origin/${_BASE_BRANCH} --name-only > _changed_files
-      sed 's/\/.*/\//' _changed_files > _changed_folders
-      for d in */; do
-          if ! grep -q "^$d" _changed_folders && [[ "$d" != "test/" ]]; then
-            rm -rf $d;
-          fi
-      done
 - id: prepare
   name: 'gcr.io/cloud-foundation-cicd/$_DOCKER_IMAGE_DEVELOPER_TOOLS:$_DOCKER_TAG_VERSION_DEVELOPER_TOOLS'
   args: ['/bin/bash', '-c', 'source /usr/local/bin/task_helper_functions.sh && prepare_environment']
@@ -71,3 +57,5 @@ tags:
 substitutions:
   _DOCKER_IMAGE_DEVELOPER_TOOLS: 'cft/developer-tools'
   _DOCKER_TAG_VERSION_DEVELOPER_TOOLS: '1'
+options:
+  machineType: E2_HIGHCPU_32
diff --git a/test/integration/sample_test.go b/test/integration/sample_test.go
index e4969768f..2f5635065 100644
--- a/test/integration/sample_test.go
+++ b/test/integration/sample_test.go
@@ -82,6 +82,13 @@ func TestSamples(t *testing.T) {
 					tft.WithSetupPath(setupPath),
 					tft.WithRetryableTerraformErrors(retryErrors, 10, time.Minute),
 				)
+
+				sampleTest.DefineInit(func(a *assert.Assertions) {
+					sampleTest.DefaultInit(a)
+
+					// run tests in parallel upto GOMAXPROCS
+					b.t.Parallel()
+				})
 				sampleTest.DefineVerify(func(a *assert.Assertions) {})
 				sampleTest.Test()
 				t.Logf("Test %s completed in %s project", sampleName, tg.projectID)