Oh no, remote #GeoParquet is much less fun in #QGIS than I thought. These few polygons took ~50 Megabytes to fetch. I guess it is not enough to just use #GDAL defaults.

Neither of these layer creation options helped:
ROW_GROUP_SIZE=1000
SORT_BY_BBOX=YES
WRITE_COVERING_BBOX=YES

HALP!

GeoParquet – Cloud-Optimized Geospatial Formats Guide

@cartocalypse does https://geoparquet.io/ help at all? It seems to aim to provide "best practice"
geoparquet-io

Fast I/O and transformation tools for GeoParquet files

@walkermatt From what I gathered GeoParquet is just not ideal for small scale interactive map browsing if data transfer is considered. And that's totally ok! :)