I wasn't sure if you would be able to but thought it worth a shot as we don't appear to have many other options now.
IGV doesn't hang, when the file is selected it appears to load but just displays as below;
INFO [Feb 04,2022 09:29] [Main] Startup IGV Version 2.11.9 12/21/2021 12:15 AM
INFO [Feb 04,2022 09:29] [Main] Java 11.0.13 (build 11.0.13+8) 2021-10-19
INFO [Feb 04,2022 09:29] [Main] Java Vendor: Eclipse Adoptium
https://adoptium.net/INFO [Feb 04,2022 09:29] [Main] JVM: OpenJDK 64-Bit Server VM Temurin-11.0.13+8
INFO [Feb 04,2022 09:29] [Main] OS: Windows 10 10.0 amd64
INFO [Feb 04,2022 09:29] [Main] IGV Directory: C:\Users\kevinbaker1\igv
INFO [Feb 04,2022 09:29] [GenomeManager] Loading genome: C:\Users\kevinbaker1\igv\genomes\hg19.genome
INFO [Feb 04,2022 09:29] [GenomeManager] Loading genome: C:\Users\kevinbaker1\igv\genomes\hg19.genome
SEVERE [Feb 04,2022 09:29] [IGVPreferences] No default value for: CIRC_VIEW_ENABLED
INFO [Feb 04,2022 09:30] [IGV] Loading 1 resources.
INFO [Feb 04,2022 09:30] [IGV] Loading 1 resources.
INFO [Feb 04,2022 09:30] [TrackLoader] Loading resource, path W:\Share\BAM-FILE-STORE\Myeloid\220126*****\******.bam
It is a local file albeit on a mapped drive, it only happens to specific people, there don't appear to be issues with the files as these load for other users. As far as I am aware there should be no differences in setup or settings between PCs either.