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did not read your whole post as it is obnoxiously long.
I resemble that remark!!!
I'm running Ubuntu with NVidia drivers with no problems at all. We will see how long this lasts.
But I can tell already that it is far more stable.
And I do wonder what the utility I ran on Win10 meant about the corrupted files. That's probably the normal state for win10 1903 or something.
The reality is that with modern code, it's so far removed from the underlying machine language that gets executed that there's no point trying optimisations at the level of a break vs setting the iterator.
Optimisations nowadays are at architectural levels - managing tight loops, using appropriate data structures, parallelisation, resource access.