reverse proxy basex behind nginx

Hello List I have basex 7.7 beta running in http server mode with httplocal = false. Access and searches either with the client direct to the BaseX server, or via restxq called directly on the server are a few tens of milliseconds. I have the BaseX httpserver accessible to the external network through a nginx reverse proxy. traceroute shows that a call gets to the machine in about 120ms. However, access and searches of the Basex database from the network are in the order of tens of seconds. I would appreciate details of more successful proxying, and also any hints on the nginx - basex coupling. Many thanks Peter