Yeah you were right, the lab version was 0.9.4, not 0.9.5, so the test was even better as the version is the same, I uninstalled lab 0.9.4 and installed lab 0.9.5 using your procedure, but the problem remains, I uninstalled the 0.9.4 io, uninstalled the lab version, to see if the files and cache can be deleted(I don't know how to delete cache files on Quest), and reinstalled the Lab version 0.9.5 (this time I double checked :), right version), and the issue persists, files that open without any problem on io 0.9.4 don't open on lab 0.9.4 or 0.9.5,
I also made some initial tests, I could not deep dive and I may be wrong, but it seems the problem just happens on API, I tried to access the same file using an HTTP address as I also have an NGNIX running in my raspberry and all the files that I tested that failed using the stash-vr via API worked. I also tested the SMB, again the same files that failed using the Stash-VR/API worked
The files that are working using stash-vr via API seem to be with lower resolution the ones that are 1920 and lower seem to work. tried to see if it's related to video codec but it seems all files are hevc, size seems not to be the issue, but I did not really tried to see if the size is the matter and may be
in short from my few tests:
0.9.4 io - all files work on HTTP, SMB, and API/Stash-vr
0.9.4 and 0.9.5 lab - all files work on HTTP and SMB, files with resolutions higher than 1920 fail in API/Stash-vr