This has recently started happening, so yes, I know it’s probably something I’ve done…
When I open any advanced settings window (by clicking on Auto-Sandbox in the main window, for example) the window opens normally. If I then click the OK button (even if I’ve not changed anything) it now takes several seconds for the window to close (although it always does close eventually). If I click the Cancel button the window closes immediately.
I’ve watched the CIS processes in Task Manager when I click OK and there is no sudden spike in either CPU or RAM usage and the disk activity light does not flash (so it’s not a disk I/O issue).
I can live with this but I wondered whether this sounds familiar to someone and there’s a simple fix.