Hi Andre.

Thank you for give me know. My server should survive some load, but keep in mind that it is Raspberry Pi 4 :-) So, it has limited memory and tile rendering is restraint just two parallel jobs. So it would be great if you keep just one connection and possibly prepare own server when you will need smaller latencies. I may provide you archive with dem data (80 GiB), originally from http://viewfinderpanoramas.org/Coverage%20map%20viewfinderpanoramas_org3.htm and help you with the setup.

Regards, Lukas