The log file you sent has all the event types turned off (except process/thread creation, which is no use here), so it can't tell us anything.
Filesystem events need to be turned on when logging (see the 3rd item in Process Monitor instructions).
Quoting the private message:
That indicates Opus is doing the right thing, and something else on your system is then bumping the timestamp. A proper procmon log should reveal what.
If it's only happening to new exe files, and not other types, then my guess is that your antivirus is involved.