diff --git a/controllers/core/node_controller.go b/controllers/core/node_controller.go
index 8a1f8b0e..5100b4b8 100644
--- a/controllers/core/node_controller.go
+++ b/controllers/core/node_controller.go
@@ -15,7 +15,6 @@ package controllers
 
 import (
 	"context"
-	"net/http"
 	"time"
 
 	"github.com/aws/amazon-vpc-resource-controller-k8s/apis/vpcresources/v1alpha1"
@@ -23,13 +22,11 @@ import (
 	rcHealthz "github.com/aws/amazon-vpc-resource-controller-k8s/pkg/healthz"
 	"github.com/aws/amazon-vpc-resource-controller-k8s/pkg/k8s"
 	"github.com/aws/amazon-vpc-resource-controller-k8s/pkg/node/manager"
-	"github.com/google/uuid"
 
 	"github.com/go-logr/logr"
 	corev1 "k8s.io/api/core/v1"
 	"k8s.io/apimachinery/pkg/api/errors"
 	"k8s.io/apimachinery/pkg/runtime"
-	"k8s.io/apimachinery/pkg/types"
 	ctrl "sigs.k8s.io/controller-runtime"
 	"sigs.k8s.io/controller-runtime/pkg/client"
 	"sigs.k8s.io/controller-runtime/pkg/controller"
@@ -124,31 +121,5 @@ func (r *NodeReconciler) SetupWithManager(mgr ctrl.Manager, healthzHandler *rcHe
 
 func (r *NodeReconciler) Check() healthz.Checker {
 	r.Log.Info("Node controller's healthz subpath was added")
-	return func(req *http.Request) error {
-		// if the reconciler is not ready, using the simple ping to test
-		// this can test the referenced cached pod datastore
-		if !r.Conditions.GetPodDataStoreSyncStatus() {
-			r.Log.V(1).Info("***** node controller healthz enpoint tested Simple Ping *****")
-			return nil
-		}
-
-		err := rcHealthz.PingWithTimeout(func(c chan<- error) {
-			// when the reconciler is ready, testing the reconciler with a fake node request
-			pingRequest := &ctrl.Request{
-				NamespacedName: types.NamespacedName{
-					Namespace: corev1.NamespaceDefault,
-					Name:      uuid.New().String(),
-				},
-			}
-
-			// expecting to 'return ctrl.Result{}, client.IgnoreNotFound(err)'
-			// IgnoreNotFound returns nil on NotFound errors.
-			// this can test the pod cached datastore and node cached datastore
-			_, rErr := r.Reconcile(r.Context, *pingRequest)
-			r.Log.V(1).Info("***** node controller healthz endpoint tested Reconcile *****")
-			c <- rErr
-		}, r.Log)
-
-		return err
-	}
+	return rcHealthz.SimplePing("node reconciler", r.Log)
 }
diff --git a/pkg/aws/ec2/api/wrapper.go b/pkg/aws/ec2/api/wrapper.go
index 7c7fdc78..31341f8e 100644
--- a/pkg/aws/ec2/api/wrapper.go
+++ b/pkg/aws/ec2/api/wrapper.go
@@ -676,7 +676,7 @@ func (e *ec2Wrapper) DescribeNetworkInterfacesPages(input *ec2.DescribeNetworkIn
 			})
 		}
 		// Add jitter to avoid EC2 API throttling in the account
-		time.Sleep(wait.Jitter(500*time.Millisecond, 0.5))
+		time.Sleep(wait.Jitter(300*time.Millisecond, 0.5))
 		return true
 
 	}); err != nil {
diff --git a/pkg/config/loader.go b/pkg/config/loader.go
index 90d1b61d..933a2a75 100644
--- a/pkg/config/loader.go
+++ b/pkg/config/loader.go
@@ -49,15 +49,15 @@ const (
 	// Tested: 12 + 8 limits (not seeing significant degradation from 15+8)
 	// Larger number seems not make latency better than 12+8
 	UserServiceClientQPS      = 12
-	UserServiceClientQPSBurst = 8
+	UserServiceClientQPSBurst = 18
 
 	// EC2 API QPS for instance service client
-	InstanceServiceClientQPS   = 5
-	InstanceServiceClientBurst = 7
+	InstanceServiceClientQPS   = 12
+	InstanceServiceClientBurst = 18
 
 	// API Server QPS
-	DefaultAPIServerQPS   = 10
-	DefaultAPIServerBurst = 15
+	DefaultAPIServerQPS   = 20
+	DefaultAPIServerBurst = 30
 )
 
 // LoadResourceConfig returns the Resource Configuration for all resources managed by the VPC Resource Controller. Currently
diff --git a/pkg/node/manager/manager.go b/pkg/node/manager/manager.go
index c9b6f9c2..92e7057b 100644
--- a/pkg/node/manager/manager.go
+++ b/pkg/node/manager/manager.go
@@ -16,7 +16,6 @@ package manager
 import (
 	"errors"
 	"fmt"
-	"net/http"
 	"strings"
 	"sync"
 	"time"
@@ -30,7 +29,6 @@ import (
 	"github.com/aws/amazon-vpc-resource-controller-k8s/pkg/resource"
 	"github.com/aws/amazon-vpc-resource-controller-k8s/pkg/utils"
 	asyncWorker "github.com/aws/amazon-vpc-resource-controller-k8s/pkg/worker"
-	"github.com/google/uuid"
 	"github.com/samber/lo"
 	apierrors "k8s.io/apimachinery/pkg/api/errors"
 	"k8s.io/apimachinery/pkg/types"
@@ -559,18 +557,6 @@ func (m *manager) removeNodeSafe(nodeName string) {
 }
 
 func (m *manager) check() healthz.Checker {
-	// instead of using SimplePing, testing the node cache from manager makes the test more accurate
-	return func(req *http.Request) error {
-		err := rcHealthz.PingWithTimeout(func(c chan<- error) {
-			randomName := uuid.New().String()
-			_, found := m.GetNode(randomName)
-			m.Log.V(1).Info("health check tested ping GetNode to check on datastore cache in node manager successfully", "TesedNodeName", randomName, "NodeFound", found)
-			var ping interface{}
-			m.worker.SubmitJob(ping)
-			m.Log.V(1).Info("health check tested ping SubmitJob with a nil job to check on worker queue in node manager successfully")
-			c <- nil
-		}, m.Log)
-
-		return err
-	}
+	// Use SimplePing in v1.4.6-internal patch
+	return rcHealthz.SimplePing("node manager", m.Log)
 }