If you make a Process Monitor log while it's happening, we should be able to use that to see what's going on, and if it's Opus itself (and why), or if it's a 3rd party shell extension or similar.
If you make a Process Monitor log while it's happening, we should be able to use that to see what's going on, and if it's Opus itself (and why), or if it's a 3rd party shell extension or similar.