diff --git a/frontend/cypress/integration/feature-toggle/feature.spec.js b/frontend/cypress/integration/feature-toggle/feature.spec.js
index e82a0bf968..3fc213e00a 100644
--- a/frontend/cypress/integration/feature-toggle/feature.spec.js
+++ b/frontend/cypress/integration/feature-toggle/feature.spec.js
@@ -250,18 +250,18 @@ describe('feature toggle', () => {
         cy.visit(`/projects/default/features2/${featureToggleName}/variants`);
         cy.intercept(
             'PATCH',
-            `/api/admin/projects/default/features/${featureToggleName}`,
+            `/api/admin/projects/default/features/${featureToggleName}/variants`,
             req => {
                 if (req.body.length === 1) {
                     expect(req.body[0].op).to.equal('add');
-                    expect(req.body[0].path).to.match(/variants/);
+                    expect(req.body[0].path).to.match(/\//);
                     expect(req.body[0].value.name).to.equal(variantName);
                 } else if (req.body.length === 2) {
                     expect(req.body[0].op).to.equal('replace');
                     expect(req.body[0].path).to.match(/weight/);
                     expect(req.body[0].value).to.equal(500);
                     expect(req.body[1].op).to.equal('add');
-                    expect(req.body[1].path).to.match(/variants/);
+                    expect(req.body[1].path).to.match(/\//);
                     expect(req.body[1].value.name).to.equal(secondVariantName);
                 }
             }
@@ -291,7 +291,7 @@ describe('feature toggle', () => {
         cy.get('[data-test=VARIANT_WEIGHT_INPUT]').clear().type('15');
         cy.intercept(
             'PATCH',
-            `/api/admin/projects/default/features/${featureToggleName}`,
+            `/api/admin/projects/default/features/${featureToggleName}/variants`,
             req => {
                 expect(req.body[0].op).to.equal('replace');
                 expect(req.body[0].path).to.match(/weight/);
@@ -320,10 +320,10 @@ describe('feature toggle', () => {
         cy.get('[data-test=DIALOGUE_CONFIRM_ID]').click();
         cy.intercept(
             'PATCH',
-            `/api/admin/projects/default/features/${featureToggleName}`,
+            `/api/admin/projects/default/features/${featureToggleName}/variants`,
             req => {
                 const e = req.body.find(e => e.op === 'remove');
-                expect(e.path).to.match(/variants/);
+                expect(e.path).to.match(/\//);
             }
         ).as('delete');
         cy.get(`[data-test=VARIANT_DELETE_BUTTON_${variantName}]`).click();
diff --git a/frontend/src/component/feature/FeatureView2/FeatureVariants/FeatureVariantsList/AddFeatureVariant/AddFeatureVariant.tsx b/frontend/src/component/feature/FeatureView2/FeatureVariants/FeatureVariantsList/AddFeatureVariant/AddFeatureVariant.tsx
index 4d9a3b7153..43cd726101 100644
--- a/frontend/src/component/feature/FeatureView2/FeatureVariants/FeatureVariantsList/AddFeatureVariant/AddFeatureVariant.tsx
+++ b/frontend/src/component/feature/FeatureView2/FeatureVariants/FeatureVariantsList/AddFeatureVariant/AddFeatureVariant.tsx
@@ -41,6 +41,7 @@ const AddVariant = ({
     save,
     editVariant,
     validateName,
+    validateWeight,
     title,
     editing,
 }) => {
@@ -115,9 +116,14 @@ const AddVariant = ({
         setError({});
         e.preventDefault();
 
-        const validationError = validateName(data.name);
-        if (validationError) {
-            setError(validationError);
+        const nameValidation = validateName(data.name);
+        if (nameValidation) {
+            setError(nameValidation);
+            return;
+        }
+        const weightValidation = validateWeight(data.weight);
+        if (weightValidation) {
+            setError(weightValidation);
             return;
         }
 
@@ -240,8 +246,9 @@ const AddVariant = ({
                 />
                 <br />
                 <Grid container>
+                    {/* If we're editing, we need to have at least 2 existing variants, since we require at least 1 variable. If adding, we could be adding nr 2, and as such should be allowed to set weightType to variable */}
                     <ConditionallyRender
-                        condition={variants.length > 0}
+                        condition={(editing && variants.length > 1) || (!editing && variants.length > 0)}
                         show={
                             <Grid
                                 item
@@ -296,6 +303,8 @@ const AddVariant = ({
                                     onChange={e => {
                                         setVariantValue(e);
                                     }}
+                                    aria-valuemin={0}
+                                    aria-valuemax={100}
                                 />
                             </Grid>
                         }
diff --git a/frontend/src/component/feature/FeatureView2/FeatureVariants/FeatureVariantsList/FeatureVariantsList.tsx b/frontend/src/component/feature/FeatureView2/FeatureVariants/FeatureVariantsList/FeatureVariantsList.tsx
index ec8ea38dea..b468a19f23 100644
--- a/frontend/src/component/feature/FeatureView2/FeatureVariants/FeatureVariantsList/FeatureVariantsList.tsx
+++ b/frontend/src/component/feature/FeatureView2/FeatureVariants/FeatureVariantsList/FeatureVariantsList.tsx
@@ -2,14 +2,7 @@ import classnames from 'classnames';
 import * as jsonpatch from 'fast-json-patch';
 
 import styles from './variants.module.scss';
-import {
-    Table,
-    TableBody,
-    TableCell,
-    TableHead,
-    TableRow,
-    Typography,
-} from '@material-ui/core';
+import { Table, TableBody, TableCell, TableHead, TableRow, Typography } from '@material-ui/core';
 import AddVariant from './AddFeatureVariant/AddFeatureVariant';
 
 import { useContext, useEffect, useState } from 'react';
@@ -29,16 +22,17 @@ import { updateWeight } from '../../../../common/util';
 import cloneDeep from 'lodash.clonedeep';
 import useDeleteVariantMarkup from './FeatureVariantsListItem/useDeleteVariantMarkup';
 import PermissionButton from '../../../../common/PermissionButton/PermissionButton';
+import { mutate } from 'swr';
 
 const FeatureOverviewVariants = () => {
     const { hasAccess } = useContext(AccessContext);
     const { projectId, featureId } = useParams<IFeatureViewParams>();
-    const { feature, refetch } = useFeature(projectId, featureId);
+    const { feature, FEATURE_CACHE_KEY } = useFeature(projectId, featureId);
     const [variants, setVariants] = useState<IFeatureVariant[]>([]);
     const [editing, setEditing] = useState(false);
     const { context } = useUnleashContext();
     const { toast, setToastData } = useToast();
-    const { patchFeatureToggle } = useFeatureApi();
+    const { patchFeatureVariants } = useFeatureApi();
     const [editVariant, setEditVariant] = useState({});
     const [showAddVariant, setShowAddVariant] = useState(false);
     const [stickinessOptions, setStickinessOptions] = useState([]);
@@ -110,7 +104,7 @@ const FeatureOverviewVariants = () => {
         return (
             <section style={{ paddingTop: '16px' }}>
                 <GeneralSelect
-                    label="Stickiness"
+                    label='Stickiness'
                     options={options}
                     value={value}
                     onChange={onChange}
@@ -124,9 +118,9 @@ const FeatureOverviewVariants = () => {
                     is used to ensure consistent traffic allocation across
                     variants.{' '}
                     <a
-                        href="https://docs.getunleash.io/advanced/toggle_variants"
-                        target="_blank"
-                        rel="noreferrer"
+                        href='https://docs.getunleash.io/advanced/toggle_variants'
+                        target='_blank'
+                        rel='noreferrer'
                     >
                         Read more
                     </a>
@@ -145,8 +139,10 @@ const FeatureOverviewVariants = () => {
         if (patch.length === 0) return;
 
         try {
-            await patchFeatureToggle(projectId, featureId, patch);
-            refetch();
+            const res = await patchFeatureVariants(projectId, featureId, patch);
+            // @ts-ignore
+            const { variants } = await res.json();
+            mutate(FEATURE_CACHE_KEY, { ...feature, variants }, false);
             setToastData({
                 show: true,
                 type: 'success',
@@ -166,7 +162,7 @@ const FeatureOverviewVariants = () => {
         try {
             await updateVariants(
                 updatedVariants,
-                'Successfully removed variant'
+                'Successfully removed variant',
             );
         } catch (e) {
             setToastData({
@@ -179,7 +175,7 @@ const FeatureOverviewVariants = () => {
     const updateVariant = async (variant: IFeatureVariant) => {
         const updatedVariants = cloneDeep(variants);
         const variantIdxToUpdate = updatedVariants.findIndex(
-            (v: IFeatureVariant) => v.name === variant.name
+            (v: IFeatureVariant) => v.name === variant.name,
         );
         updatedVariants[variantIdxToUpdate] = variant;
         await updateVariants(updatedVariants, 'Successfully updated variant');
@@ -194,30 +190,36 @@ const FeatureOverviewVariants = () => {
 
         await updateVariants(
             [...variants, variant],
-            'Successfully added a variant'
+            'Successfully added a variant',
         );
     };
 
     const updateVariants = async (
         variants: IFeatureVariant[],
-        successText: string
+        successText: string,
     ) => {
         const newVariants = updateWeight(variants, 1000);
         const patch = createPatch(newVariants);
 
         if (patch.length === 0) return;
-        await patchFeatureToggle(projectId, featureId, patch)
-            .then(() => {
-                refetch();
-                setToastData({
-                    show: true,
-                    type: 'success',
-                    text: successText,
-                });
-            })
-            .catch(e => {
-                throw e;
+        try {
+            const res = await patchFeatureVariants(projectId, featureId, patch);
+            // @ts-ignore
+            const { variants } = await res.json();
+            mutate(FEATURE_CACHE_KEY, { ...feature, variants }, false);
+            setToastData({
+                show: true,
+                type: 'success',
+                text: successText,
             });
+        } catch (e) {
+            setToastData({
+                show: true,
+                type: 'error',
+                text: e.toString(),
+            });
+        }
+
     };
 
     const validateName = (name: string) => {
@@ -248,17 +250,13 @@ const FeatureOverviewVariants = () => {
     });
 
     const createPatch = (newVariants: IFeatureVariant[]) => {
-        const patch = jsonpatch
-            .compare(feature.variants, newVariants)
-            .map(patch => {
-                return { ...patch, path: `/variants${patch.path}` };
-            });
-        return patch;
+        return jsonpatch
+            .compare(feature.variants, newVariants);
     };
 
     return (
         <section style={{ padding: '16px' }}>
-            <Typography variant="body1">
+            <Typography variant='body1'>
                 Variants allows you to return a variant object if the feature
                 toggle is considered enabled for the current request. When using
                 variants you should use the{' '}
diff --git a/frontend/src/hooks/api/actions/useFeatureApi/useFeatureApi.ts b/frontend/src/hooks/api/actions/useFeatureApi/useFeatureApi.ts
index 0921a49599..360f5c0187 100644
--- a/frontend/src/hooks/api/actions/useFeatureApi/useFeatureApi.ts
+++ b/frontend/src/hooks/api/actions/useFeatureApi/useFeatureApi.ts
@@ -1,6 +1,7 @@
 import { IFeatureToggleDTO } from '../../../../interfaces/featureToggle';
 import { ITag } from '../../../../interfaces/tags';
 import useAPI from '../useApi/useApi';
+import { Operation } from 'fast-json-patch';
 
 const useFeatureApi = () => {
     const { makeRequest, createRequest, errors, loading } = useAPI({
@@ -182,6 +183,21 @@ const useFeatureApi = () => {
         }
     };
 
+    const patchFeatureVariants = async (projectId: string, featureId: string, patchPayload: Operation[]) => {
+        const path = `api/admin/projects/${projectId}/features/${featureId}/variants`;
+        const req = createRequest(path, {
+            method: 'PATCH',
+            body: JSON.stringify(patchPayload),
+        });
+
+        try {
+            const res = await makeRequest(req.caller, req.id);
+            return res;
+        } catch (e) {
+            throw e;
+        }
+    };
+
     const cloneFeatureToggle = async (
         projectId: string,
         featureId: string,
@@ -213,6 +229,7 @@ const useFeatureApi = () => {
         deleteTagFromFeature,
         archiveFeatureToggle,
         patchFeatureToggle,
+        patchFeatureVariants,
         cloneFeatureToggle,
         loading,
     };