Opus sometimes freezes with 7-zip which works when Opus closes

[Leo]

When you say Opus freezes, do you mean the window becomes unresponsive?

But you can still open another window and use that OK, or exit it via the taskbar (or similar)?

The issue is most likely another shell extension which is participating in context menus:

Crash, exit or high CPU when right-clicking certain files

Summary: This FAQ helps if Directory Opus crashes, exits or uses high CPU when you open the right-click context menu for files or folders. These problems are usually caused by bugs in 3rd party components and this FAQ contains steps for finding and …

Snapshots of the process while the window is unresponsive may also reveal what's happening:

Manually generating process snapshots

If you find Directory Opus is hanging, using a lot of CPU, or otherwise exhibiting unexplained behaviour, one important diagnostic tool is the generation of manual process snapshots (often called "dumps"). These snapshots capture the state of the Op…