After the migration from svfas# servers to sv-nas1.rcp.epfl.ch, some QuPath projects with absolute paths to the servers caused QuPath to be extremely slow when opening, to the point that it looks like it's hanging.
Open your project.qpproj file and look for the uri tag of your files
"serverBuilder": {
"builderType": "uri",
"providerClassName": "qupath.lib.images.servers.bioformats.BioFormatsServerBuilder",
-----> "uri": "file://svfas6/Graeff-Lab/Giulia/In-vivo_experiments/WT-80_IMshockCTRL/Images_WT80/WT80_H3K27Ac/ID25715_CA1_01.czi",
"args": [
"--series",
"0"
],
If the URI contains a path like this one, then QuPath will be very slow.
You can either use "Find and Replace" to change every svfas6 with sv-nas1.rcp or use the following script directly from QuPath (No need for an open project)
Fix Unmapped Image Entry URIs.groovy (on GitHub Gists)