Just posting here to tell that we tested the solution provided to us by UEMdev and indeed the issue is fixed. At least we don't see oplocks anymore on the configuration files. Now we still need to fix some slow imports but hey, one thing at a time .....

Also, not only does it fix the issue, we also don;t see any other issues with the fix. We are using View 7.5.1, Appvolumes 2.16. UEM 9.4 with W10 1703 and vGPU. So it seems that this setting can be used safely.