My app makes very heavy use of OpenCL events.
For the longest time, the app was unstable - seemingly there was a race condition where
event callbacks sometimes would not get called, causing my app to stop working.
Now, with update 18.5.1 on Windows, this problem has miraculously gone away. Everything is rock solid.
And I can run the app for a long time with no drop in performance
So, whoever you are and whatever you did, thank you!