In a hello world flask application, using https instead of http introduces 1s overhead

I created a simple app (flask + gunicorn) and uploaded it to Google App Engine to test how fast my request would be processed in a production environment. I was surprised to see a huge 0.7 to 1.2 second overhead introduced by using an http URL vs https one (cold request was even slower). Is this normal or am I doing something wrong here.

I also tested my app in Azure App Service; I could not get http to work, but https request (which I'm interested in) resulted in a similar lag.

main.py (server side)

from flask import Flask, requestapp = Flask(__name__)@app.route('/', methods=['POST'])def handle_request():    payload = request.json    return payload

test.py (client side)

import requestsimport timeclass Test:    def __init__(self):        self.url = "https://name.appspot.com"    def send_request(self, **kwargs):        response = requests.post(self.url, json=kwargs)        return(response.text)if __name__ == '__main__':    test = Test()    text = "Hi"    start = time.time()    result = test.send_request(text=text)    end = time.time()    print(f'Retrieved {result} in {end - start}')

Here are my config files for Google App Engine and Azure App Service.

Google (app.yaml):

runtime: python311instance_class: F1entrypoint: gunicorn -b :$PORT main:app

Azure (startup.txt)

gunicorn -w 4 main:app