I would have to see the code you are currently using. Also, if this posts is referencing some other post or my reply I can't locate it quickly so you might want to post a URL to give me a context.
If you are experiencing a delay of this magnitude it is probably because you are flooding a bunch of AJAX requests which launch immediately and the browser is running out of sockets. Again, I would have to see the code you are using but the whole purpose of using async/await is to mediate the AJAX requests one after the other to avoid running out of sockets.
