Strange crash

From the crash dumps you sent, the crash seems to be happening in part of the Windows code on a thread that isn't part of Opus, so it's not clear what is crashing or why. The problem could be in Opus or in another component that is loaded into the Opus process.

If you can narrow down the cause of it then that might help track it down.

Some suggestions on how to narrow down the problem can be found in these two threads:

[Crash, exit or high CPU when viewing certain directories)

[General slowdown or instability investigation steps)