Timeout for Excel Export

I am experiencing a timeout when exporting nearly 12.000 records (currently 11.742) from a point layer to Excel. The layer is based on a mapservice (URL below). If I in Postman queries the entire WFS-layer it takes 7-8 seconds to execute and return the result (around 33MB)

If I in Essentials selects all records from the same layer (Stoppestedsudstyr), e.g. by making a wildcard search on “Beacon ID” it returns the expected 11.742 records. If I exports this to Excel, I get an error after around 1 minute (RequestTimeoutError: Timeout exceeded)

If I make a smaller selection (e.g., around 3.000 records) the Excel exports works fine, delivering the file after around 45 seconds.

Why am I experiencing this poor performance? Is it possible to change a timeout value somewhere or are there other ways I can optimize my system, making the Excel a success?

WFS

https://geoservices.moviatrafik.dk/arcgis/services/Registrering2/PublicReadOnly/MapServer/WFSServer?SERVICE=WFS&VERSION=1.0.0&REQUEST=getfeature&TypeName=Stoppestedsudstyr

Essentials

https://webgis.moviatrafik.dk/Html5Viewer_DK/Index.html?viewer=Dummy