Query time increased after upgrade to ES version 8.3

Hello

We are facing an issue with elasticsearch query performance where we are trying to query elasticsearch index it is recording more than 5 second for most of the queries, we are testing through jmeter

Before version 8.3 we were on version 7.14 we havent face this issue earlier, during 7.14 most of the request below 400ms

Following is the elasticsearch,yml file, kindly confirm if anthing we need to correct

======================== Elasticsearch Configuration =========================

---------------------------------- Cluster -----------------------------------

cluster.name: escluster
cluster.initial_master_nodes: ["master-1", "master-2", "master-3"]

------------------------------------ Node ------------------------------------

node.name: data-1
node.roles: [ data ]

----------------------------------- Paths ------------------------------------

path.data: /opt/elastictdata2/elastic/storage/datanode1/data
path.logs: /opt/elastictdata2/elastic/storage/datanode1/logs

----------------------------------- Memory -----------------------------------

bootstrap.memory_lock: true

---------------------------------- Network -----------------------------------

network.host: 0.0.0.0
http.port: 9201
transport.port: 9301
discovery.seed_hosts: [ "node1:9300", "node2:9300", "node3:9300" ]

#cluster.routing.allocation.same_shard.host: true

xpack.security.enabled: true

xpack.security.http.ssl.enabled: true
xpack.security.http.ssl.key: certificate/key.key
xpack.security.http.ssl.certificate: certificate/server.crt
xpack.security.http.ssl.certificate_authorities: certificate/ca.crt
xpack.security.http.ssl.client_authentication: required

xpack.security.transport.ssl.enabled: true
xpack.security.transport.ssl.key: certificate/key.key
xpack.security.transport.ssl.certificate: certificate/server.crt
xpack.security.transport.ssl.certificate_authorities: certificate/ca.crt
xpack.security.transport.ssl.verification_mode: certificate
xpack.security.transport.ssl.client_authentication: required

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