diff --git a/src/__tests__/if-run/lib/compute.test.ts b/src/__tests__/if-run/lib/compute.test.ts
index a1d5f0a3..c0261ab2 100644
--- a/src/__tests__/if-run/lib/compute.test.ts
+++ b/src/__tests__/if-run/lib/compute.test.ts
@@ -22,13 +22,14 @@ jest.mock('../../../common/util/logger', () => ({
   },
 }));
 
-import * as explainer from '../../../if-run/lib/explain';
-
-import {compute} from '../../../if-run/lib/compute';
 import {ComputeParams} from '../../../if-run/types/compute';
 import {pluginStorage} from '../../../if-run/util/plugin-storage';
 
 describe('lib/compute: ', () => {
+  beforeEach(() => {
+    jest.resetModules();
+  });
+
   /**
    * Mock plugins.
    */
@@ -135,6 +136,7 @@ describe('lib/compute: ', () => {
 
   describe('compute(): ', () => {
     it('computes simple tree with execute plugin.', async () => {
+      const {compute} = require('../../../if-run/lib/compute');
       const tree = {
         children: {
           mockChild: {
@@ -156,6 +158,7 @@ describe('lib/compute: ', () => {
     });
 
     it('computes simple tree with regroup on inputs only (no compute).', async () => {
+      const {compute} = require('../../../if-run/lib/compute');
       const tree = {
         children: {
           mockChild: {
@@ -184,7 +187,34 @@ describe('lib/compute: ', () => {
       expect(response.children.mockChild.children).toEqual(expectedResponse);
     });
 
+    it('skips regrouping on already regrouped data.', async () => {
+      const {compute} = require('../../../if-run/lib/compute');
+      const expectedResponse = {
+        'uk-west': {
+          inputs: [{region: 'uk-west', timestamp: 'mock-timestamp-1'}],
+        },
+        'uk-east': {
+          inputs: [
+            {region: 'uk-east', timestamp: 'mock-timestamp-2'},
+            {region: 'uk-east', timestamp: 'mock-timestamp-3'},
+          ],
+        },
+      };
+      const tree = {
+        children: {
+          mockChild: {
+            pipeline: {regroup: ['region']},
+            children: expectedResponse,
+          },
+        },
+      };
+      const response = await compute(tree, paramsExecute);
+
+      expect(response.children.mockChild.children).toEqual(expectedResponse);
+    });
+
     it('computes simple tree with regroup, grouping inputs and outputs.', async () => {
+      const {compute} = require('../../../if-run/lib/compute');
       const tree = {
         children: {
           mockChild: {
@@ -232,6 +262,7 @@ describe('lib/compute: ', () => {
     });
 
     it('computes simple tree with defaults and execute plugin.', async () => {
+      const {compute} = require('../../../if-run/lib/compute');
       const tree = {
         children: {
           mockChild: {
@@ -259,6 +290,7 @@ describe('lib/compute: ', () => {
     });
 
     it('computes nested tree with defaults and execute plugin.', async () => {
+      const {compute} = require('../../../if-run/lib/compute');
       const tree = {
         children: {
           mockChild1: {
@@ -308,6 +340,7 @@ describe('lib/compute: ', () => {
     });
 
     it('computes simple tree with no defaults and no inputs with execute plugin.', async () => {
+      const {compute} = require('../../../if-run/lib/compute');
       const tree = {
         children: {
           mockChild: {
@@ -323,6 +356,7 @@ describe('lib/compute: ', () => {
     });
 
     it('computes simple tree with defaults and no inputs with execute plugin.', async () => {
+      const {compute} = require('../../../if-run/lib/compute');
       const tree = {
         children: {
           mockChild: {
@@ -343,6 +377,7 @@ describe('lib/compute: ', () => {
     });
 
     it('computes simple tree with append, preserving existing outputs.', async () => {
+      const {compute} = require('../../../if-run/lib/compute');
       const tree = {
         children: {
           mockChild: {
@@ -378,6 +413,7 @@ describe('lib/compute: ', () => {
     });
 
     it('computes simple tree with append when outputs is null.', async () => {
+      const {compute} = require('../../../if-run/lib/compute');
       const tree = {
         children: {
           mockChild: {
@@ -402,6 +438,7 @@ describe('lib/compute: ', () => {
   });
 
   it('computes simple tree with regroup and append, with existing outputs preserved and regrouped without re-computing.', async () => {
+    const {compute} = require('../../../if-run/lib/compute');
     const tree = {
       children: {
         mockChild: {
@@ -434,6 +471,7 @@ describe('lib/compute: ', () => {
   });
 
   it('computes simple tree with regroup and append, with existing outputs preserved and without new outputs.', async () => {
+    const {compute} = require('../../../if-run/lib/compute');
     const tree = {
       children: {
         mockChild: {
@@ -460,6 +498,7 @@ describe('lib/compute: ', () => {
   });
 
   it('computes simple tree with regroup and no append, with existing outputs that are removed.', async () => {
+    const {compute} = require('../../../if-run/lib/compute');
     const tree = {
       children: {
         mockChild: {
@@ -488,6 +527,7 @@ describe('lib/compute: ', () => {
   });
 
   it('computes simple tree with observe plugin.', async () => {
+    const {compute} = require('../../../if-run/lib/compute');
     const tree = {
       children: {
         mockChild: {
@@ -507,6 +547,7 @@ describe('lib/compute: ', () => {
   });
 
   it('computes simple tree with observe plugin.', async () => {
+    const {compute} = require('../../../if-run/lib/compute');
     const tree = {
       children: {
         mockChild: {
@@ -526,6 +567,7 @@ describe('lib/compute: ', () => {
   });
 
   it('observes simple tree with observe plugin.', async () => {
+    const {compute} = require('../../../if-run/lib/compute');
     const tree = {
       children: {
         mockChild: {
@@ -545,6 +587,7 @@ describe('lib/compute: ', () => {
   });
 
   it('observes simple tree with config.', async () => {
+    const {compute} = require('../../../if-run/lib/compute');
     const tree = {
       children: {
         mockChild: {
@@ -565,6 +608,7 @@ describe('lib/compute: ', () => {
   });
 
   it('warns when pipeline is null.', async () => {
+    const {compute} = require('../../../if-run/lib/compute');
     process.env.LOGGER = 'invalid';
     const tree = {
       children: {
@@ -583,6 +627,7 @@ describe('lib/compute: ', () => {
   });
 
   it('warns when pipeline is an empty object.', async () => {
+    const {compute} = require('../../../if-run/lib/compute');
     const tree = {
       children: {
         mockChild: {
@@ -598,6 +643,7 @@ describe('lib/compute: ', () => {
   });
 
   it('warns when config is provided in the tree.', async () => {
+    const {compute} = require('../../../if-run/lib/compute');
     process.env.LOGGER = 'true';
     const tree = {
       children: {
@@ -624,6 +670,7 @@ describe('lib/compute: ', () => {
   });
 
   it('warns when config is provided in the tree and it is null.', async () => {
+    const {compute} = require('../../../if-run/lib/compute');
     process.env.LOGGER = 'empty';
     const tree = {
       children: {
@@ -650,6 +697,8 @@ describe('lib/compute: ', () => {
   });
 
   it('observes simple tree with execute plugin and explain property.', async () => {
+    const {compute} = require('../../../if-run/lib/compute');
+    const explainer = require('../../../if-run/lib/explain');
     const tree = {
       children: {
         mockChild: {
@@ -678,6 +727,7 @@ describe('lib/compute: ', () => {
   });
 
   it('computes simple tree with execute plugin and explain property.', async () => {
+    const {compute} = require('../../../if-run/lib/compute');
     const tree = {
       children: {
         mockChild: {
diff --git a/src/if-run/config/strings.ts b/src/if-run/config/strings.ts
index 41b9dc01..951f98a7 100644
--- a/src/if-run/config/strings.ts
+++ b/src/if-run/config/strings.ts
@@ -51,6 +51,7 @@ Note that for the '--output' option you also need to define the output type in y
   COMPUTING_COMPONENT_PIPELINE: (component: string) =>
     `**Computing \`${component}\` pipeline**`,
   REGROUPING: 'Regrouping',
+  SKIPPING_REGROUP: 'Already correctly grouped - skipping regrouping.',
   OBSERVING: (nodeName: string) =>
     `Running observe pipeline: \`${nodeName}\` plugin`,
   MERGING_DEFAULTS_WITH_INPUT_DATA: 'Merging defaults with input data',
diff --git a/src/if-run/lib/compute.ts b/src/if-run/lib/compute.ts
index 0381fee1..f77b1b99 100644
--- a/src/if-run/lib/compute.ts
+++ b/src/if-run/lib/compute.ts
@@ -20,14 +20,18 @@ const {
   COMPUTING_COMPONENT_PIPELINE,
   REGROUPING,
   OBSERVING,
+  SKIPPING_REGROUP,
 } = STRINGS;
 
+const childNames = new Set();
+
 /**
  * Traverses all child nodes based on children grouping.
  */
 const traverse = async (children: any, params: ComputeParams) => {
   for (const child in children) {
     console.debug(COMPUTING_COMPONENT_PIPELINE(child));
+    childNames.add(child);
     await computeNode(children[child], params);
   }
 };
@@ -143,27 +147,40 @@ const computeNode = async (node: Node, params: ComputeParams): Promise<any> => {
   if ((noFlags || params.regroup) && pipelineCopy.regroup) {
     const originalOutputs = params.append ? node.outputs || [] : [];
 
-    node.children = Regroup(
-      outputStorage,
-      originalOutputs,
-      pipelineCopy.regroup
+    // Grabs all the values according to grouping criteria.
+    const regroupValues = pipelineCopy.regroup
+      .map(group => [...new Set(outputStorage.map(output => output[group]))])
+      .flat();
+    // Checks if regroup values are present in the children list.
+    const isRegrouped = regroupValues.every(one =>
+      [...childNames].includes(one)
     );
 
-    delete node.inputs;
-    delete node.outputs;
+    if (!isRegrouped) {
+      node.children = Regroup(
+        outputStorage,
+        originalOutputs,
+        pipelineCopy.regroup
+      );
 
-    debugLogger.setExecutingPluginName();
-    console.debug(REGROUPING);
+      delete node.inputs;
+      delete node.outputs;
 
-    return traverse(node.children, {
-      ...params,
-      pipeline: {
-        ...pipelineCopy,
-        regroup: undefined,
-      },
-      defaults,
-      config,
-    });
+      debugLogger.setExecutingPluginName();
+      console.debug(REGROUPING);
+
+      return traverse(node.children, {
+        ...params,
+        pipeline: {
+          ...pipelineCopy,
+          regroup: undefined,
+        },
+        defaults,
+        config,
+      });
+    } else {
+      console.debug(SKIPPING_REGROUP);
+    }
   }
 
   console.debug('\n');