id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
23671	parallelize layer loading on session restore	anonymous	anonymous	"When opening a saved session, layers (or at least OSM data layers) are loaded sequentially. This increases load time quite a bit when opening a session with multiple, large datasets. Ideally they could be parsed/loaded in parallel.

My use case are large auto-generated .osm files made up from GPX tracks, where the nodes additionally contain the video timestamp. This allows fast lookups of the detailed video, which is not something I can do with ""raw GPX"". Likewise, classic GPS-tagged JPEGs become unwieldy. I split the auto-generated .osm by year, but that didn't improve the load times due to the loading happening sequentially.

I'm aware this usage is not exactly common, so feel free to wontfix.

Thanks
Stefan"	enhancement	needinfo	minor		Core	tested