Hi,
Thank you for the details, it helps a lot! The configuration seems to be perfectly fine to me.
I tried on the given URL, but it seems to be more than fine, actually super fast on my end – responses around 400ms and less, that is very impressive: https://i.imgur.com/UHskrhG.png
I tested a few more phrases but it never went above 600ms.
Does this happen for specific phrases or is this already resolved? If the requests are delayed only on your end, then I would recommend checking your firewall as well as browser extensions. Some browser extensions can temper with the requests and delay the execution.