diff --git a/superset/assets/spec/javascripts/explore/utils_spec.jsx b/superset/assets/spec/javascripts/explore/utils_spec.jsx
index 4efc21d3d..399d761a2 100644
--- a/superset/assets/spec/javascripts/explore/utils_spec.jsx
+++ b/superset/assets/spec/javascripts/explore/utils_spec.jsx
@@ -163,13 +163,8 @@ describe('exploreUtils', () => {
         endpointType: 'json',
         allowDomainSharding: true,
       }).url;
-      expect(url).toMatch(availableDomains[0]);
-
-      url = getExploreUrlAndPayload({
-        formData,
-        endpointType: 'json',
-        allowDomainSharding: true,
-      }).url;
+      // skip main domain for fetching chart if domain sharding is enabled
+      // to leave main domain free for other calls like fav star, save change, etc.
       expect(url).toMatch(availableDomains[1]);
 
       url = getExploreUrlAndPayload({
@@ -192,7 +187,7 @@ describe('exploreUtils', () => {
         endpointType: 'json',
         allowDomainSharding: true,
       }).url;
-      expect(url).toMatch(availableDomains[0]);
+      expect(url).toMatch(availableDomains[1]);
     });
     it('not generate url to different domains without flag', () => {
       let csvURL = getExploreUrlAndPayload({
diff --git a/superset/assets/src/chart/chartAction.js b/superset/assets/src/chart/chartAction.js
index 38f93cb89..9cf33f7ca 100644
--- a/superset/assets/src/chart/chartAction.js
+++ b/superset/assets/src/chart/chartAction.js
@@ -33,7 +33,7 @@ import { addDangerToast } from '../messageToasts/actions';
 import { logEvent } from '../logger/actions';
 import { Logger, LOG_ACTIONS_LOAD_CHART } from '../logger/LogUtils';
 import getClientErrorObject from '../utils/getClientErrorObject';
-import { allowCrossDomain } from '../utils/hostNamesConfig';
+import { allowCrossDomain as allowDomainSharding } from '../utils/hostNamesConfig';
 
 export const CHART_UPDATE_STARTED = 'CHART_UPDATE_STARTED';
 export function chartUpdateStarted(queryController, latestQueryFormData, key) {
@@ -212,7 +212,7 @@ export function exploreJSON(
       formData,
       endpointType: 'json',
       force,
-      allowDomainSharding: true,
+      allowDomainSharding,
       method,
     });
     const logStart = Logger.getTimestamp();
@@ -227,7 +227,7 @@ export function exploreJSON(
       signal,
       timeout: timeout * 1000,
     };
-    if (allowCrossDomain) {
+    if (allowDomainSharding) {
       querySettings = {
         ...querySettings,
         mode: 'cors',
diff --git a/superset/assets/src/explore/exploreUtils.js b/superset/assets/src/explore/exploreUtils.js
index f4ebbedbd..4b9abebf8 100644
--- a/superset/assets/src/explore/exploreUtils.js
+++ b/superset/assets/src/explore/exploreUtils.js
@@ -34,6 +34,14 @@ function getHostName(allowDomainSharding = false) {
   if (allowDomainSharding) {
     currentIndex = requestCounter % availableDomains.length;
     requestCounter += 1;
+
+    // if domain sharding is enabled, skip main domain for fetching chart API
+    // leave main domain free for other calls like fav star, save change, etc.
+    // to make dashboard be responsive when it's loading large number of charts
+    if (currentIndex === 0) {
+      currentIndex += 1;
+      requestCounter += 1;
+    }
   }
 
   return availableDomains[currentIndex];